
(a)
Interpretation:
Final temperature (T2) of the methane is to be calculated when some amount of heat is given to the to the methane.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(a)

Answer to Problem 4.3P
T=626.817 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for methane in equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dmethane 1.702 9.081 −2.164 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=1.702×373.15×(τ−1)+9.081×10−32373.152(τ2−1) +−2.164×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=635.1013(τ−1)+632.223(τ2−1)−37.479(τ3−1)T∫373.15ΔC∘PRdT=635.1013τ−635.1013+632.223τ2−632.223−37.479τ3+37.479T∫373.15ΔC∘PRdT=−37.479τ3+632.223τ2+635.1013τ−1229.8453
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K =−37.479τ3+632.223τ2+635.1013τ−1229.845337.479τ3−632.223τ2−635.1013τ+2673.194=0
On solving,
τ=1.6798,−2.412, 17.6
Considering positive value of temperature τ=1.6798
Hence,
τ=TT0=T100+273.15=1.6798T=626.817 K
(b)
Interpretation:
Final temperature (T2) of the ethane is to be calculated when some amount of heat is given to the to the ethane.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(b)

Answer to Problem 4.3P
T=538.455 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for ethane in equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dethane 1.131 19.225 −5.561 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=1.131×373.15×(τ−1)+19.225×10−32373.152(τ2−1) +−5.561×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=422.033(τ−1)+1338.453(τ2−1)−96.31(τ3−1)T∫373.15ΔC∘PRdT=422.033τ−422.033+1338.453τ2−1338.453−96.31τ3+96.31T∫373.15ΔC∘PRdT=−96.31τ3+1338.453τ2+422.033τ−1664.176
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−96.31τ3+1338.453τ2+422.033τ−1664.17696.31τ3−1338.453τ2−422.033τ+3107.525=0
On solving,
τ=1.443,−1.592, 14.0458
Considering positive value of temperature τ=1.443
Hence,
τ=TT0=T100+273.15=1.443T=538.455 K
(c)
Interpretation:
Final temperature (T2) of the propane is to be calculated when some amount of heat is given to the to the propane.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(c)

Answer to Problem 4.3P
T=493.3043 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for propane in equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dpropane 1.213 28.785 −8.824 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=1.213×373.15×(τ−1)+28.785×10−32373.152(τ2−1) +−8.824×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=452.631(τ−1)+2004.025(τ2−1)−152.825(τ3−1)T∫373.15ΔC∘PRdT=452.631τ−452.631+2004.025τ2−2004.025−152.825τ3+152.825T∫373.15ΔC∘PRdT=−152.825τ3+2004.025τ2+452.631τ−2303.831
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−152.825τ3+2004.025τ2+452.631τ−2303.831152.825τ3−2004.025τ2−452.631τ+3747.18=0
On solving,
τ=1.322,−1.405, 13.197
Considering positive value of temperature τ=1.322
Hence,
τ=TT0=T100+273.15=1.322T=493.3043 K
(d)
Interpretation:
Final temperature (T2) of the n -butane is to be calculated when some amount of heat is given to the to the n -butane.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(d)

Answer to Problem 4.3P
T=466.81 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for n -butane in equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dn−butane 1.935 36.915 −11.402 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=1.935×373.15×(τ−1)+36.915×10−32373.152(τ2−1) +−11.402×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=722.045(τ−1)+2570.039(τ2−1)−197.474(τ3−1)T∫373.15ΔC∘PRdT=722.045τ−722.045+2570.039τ2−2570.039−197.474τ3+197.474T∫373.15ΔC∘PRdT=−197.474τ3+2570.039τ2+722.045τ−3094.61
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−197.474τ3+2570.039τ2+722.045τ−3094.61197.474τ3−2570.039τ2−722.045τ+4537.96=0
On solving,
τ=1.251,−1.396, 13.16
Considering positive value of temperature τ=1.251
Hence,
τ=TT0=T100+273.15=1.251T=466.81 K
(e)
Interpretation:
Final temperature (T2) of the n -hexane is to be calculated when some amount of heat is given to the n -hexane.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(e)

Answer to Problem 4.3P
T=438.45 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for n -hexanein equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dn−hexane 3.025 53.722 −16.791 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=3.025×373.15×(τ−1)+53.722×10−32373.152(τ2−1) +−16.791×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=1128.78(τ−1)+3740.15(τ2−1)−290.807(τ3−1)T∫373.15ΔC∘PRdT=1128.78τ−1128.78+3740.15τ2−3740.15−290.807τ3+290.807T∫373.15ΔC∘PRdT=−290.807τ3+3740.15τ2+1128.78τ−4578.12
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−290.807τ3+3740.15τ2+1128.78τ−4578.12290.807τ3−3740.15τ2−1128.78τ+6021.471=0
On solving,
τ=1.175,−1.351, 13.04
Considering positive value of temperature τ=1.175
Hence,
τ=TT0=T100+273.15=1.175T=438.45 K
(f)
Interpretation:
Final temperature (T2) of the n -octane is to be calculated when some amount of heat is given to the to the n -octane.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(f)

Answer to Problem 4.3P
T=371.695 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for n -octanein equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dn−hexane 4.108 70.567 −22.208 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=4.108×373.15×(τ−1)+70.567×10−32373.152(τ2−1) +−22.208×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=1532.9002(τ−1)+4912.91(τ2−1)−384.63(τ3−1)T∫373.15ΔC∘PRdT=1532.9002τ−1532.9002+4912.91τ2−4912.91−384.63τ3+384.63T∫373.15ΔC∘PRdT=−384.63τ3+4912.91τ2+1532.9002τ−6061.184
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−384.63τ3+4912.91τ2+1532.9002τ−6061.184384.63τ3−4912.91τ2−1532.9002τ+6021.471=0
On solving,
τ=0.9961,−1.21, 12.987
Considering positive value of temperature τ=0.9961
Hence,
τ=TT0=T100+273.15=0.9961T=371.695 K
(g)
Interpretation:
Final temperature (T2) of the propylene is to be calculated when some amount of heat is given to the to the propylene.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(g)

Answer to Problem 4.3P
T=513.08 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for propylenein equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dpropylene 1.637 22.706 −6.915 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=1.637×373.15×(τ−1)+22.706×10−32373.152(τ2−1) +−6.915×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=610.847(τ−1)+1580.8(τ2−1)−119.763(τ3−1)T∫373.15ΔC∘PRdT=610.847τ−610.847+1580.8τ2−1580.8−119.763τ3+119.763T∫373.15ΔC∘PRdT=−119.763τ3+1580.8τ2+610.847τ−2071.88
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−119.763τ3+1580.8τ2+610.847τ−2071.88119.763τ3−1580.8τ2−610.847τ+3515.233=0
On solving,
τ=1.375,−1.592, 13.416
Considering positive value of temperature τ=1.375
Hence,
τ=TT0=T100+273.15=1.375T=513.08 K
(h)
Interpretation:
Final temperature (T2) of the 1-pentene is to be calculated when some amount of heat is given to the to the 1-pentene.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(h)

Answer to Problem 4.3P
T=457.855 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for 1-pentene in equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5D1−pentene 2.691 39.753 −12.447 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=2.691×373.15×(τ−1)+39.753×10−32373.152(τ2−1) +−12.447×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=1004.147(τ−1)+2767.62(τ2−1)−215.57(τ3−1)T∫373.15ΔC∘PRdT=1004.147τ−1004.147+2767.62τ2−2767.62−215.57τ3+215.57T∫373.15ΔC∘PRdT=−215.57τ3+2767.62τ2+1004.147τ−3556.197
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−215.57τ3+2767.62τ2+1004.147τ−3556.197215.57τ3−2767.62τ2−1004.147τ+4999.546=0
On solving,
τ=1.227,−1.447, 13.059
Considering positive value of temperature τ=1.227
Hence,
τ=TT0=T100+273.15=1.227T=457.855 K
(i)
Interpretation:
Final temperature (T2) of the 1-heptene is to be calculated when some amount of heat is given to the to the 1-heptene.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(i)

Answer to Problem 4.3P
T=433.97 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for 1-heptenein equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5D1−heptene 3.768 56.588 −17.847 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=3.768×373.15×(τ−1)+56.588×10−32373.152(τ2−1) +−17.847×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=1406.03(τ−1)+3939.68(τ2−1)−309.097(τ3−1)T∫373.15ΔC∘PRdT=1406.03τ−1406.03+3939.68τ2−3939.68−309.097τ3+309.097T∫373.15ΔC∘PRdT=−309.097τ3+3939.68τ2+1406.03τ−5036.61
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−309.097τ3+3939.68τ2+1406.03τ−5036.61309.097τ3−3939.68τ2−1406.03τ+6479.96=0
On solving,
τ=1.163,−1.389, 12.97
Considering positive value of temperature τ=1.163
Hence,
τ=TT0=T100+273.15=1.163T=433.97 K
(j)
Interpretation:
Final temperature (T2) of the 1-Octene is to be calculated when some amount of heat is given to the to the 1-Octene.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(j)

Answer to Problem 4.3P
T=426.51 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for 1-Octenein equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5D1−Octene 4.324 64.96 −20.521 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=4.324×373.15×(τ−1)+64.96×10−32373.152(τ2−1) +−20.521×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=1613.5(τ−1)+4522.55(τ2−1)−355.41(τ3−1)T∫373.15ΔC∘PRdT=1613.5τ−1613.5+4522.55τ2−4522.55−355.41τ3+355.41T∫373.15ΔC∘PRdT=−355.41τ3+4522.55τ2+1613.5τ−5780.64
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−355.41τ3+4522.55τ2+1613.5τ−5780.64355.41τ3−4522.55τ2−1613.5τ+7223.99=0
On solving,
τ=1.143,−1.37, 12.95
Considering positive value of temperature τ=1.143
Hence,
τ=TT0=T100+273.15=1.143T=426.51 K
(k)
Interpretation:
Final temperature (T2) of the acetyleneis to be calculated when some amount of heat is given to the to the acetylene.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(k)

Answer to Problem 4.3P
T=595.55 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for acetylenein equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dacetylene 6.132 1.952 0 −1.299
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=6.132×373.15×(τ−1)+1.952×10−32373.152(τ2−1) +03×373.153(τ3−1)+−1.299×105373.15×(τ−1τ)T∫373.15ΔC∘PRdT=2288.15(τ−1)+135.9(τ2−1)−348.12(τ−1τ)T∫373.15ΔC∘PRdT=2288.15τ−2288.15+135.9τ2−135.9−348.12+348.12τT∫373.15ΔC∘PRdT=135.9τ2+2288.15τ−2772.17+348.12τ
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=135.9τ2+2288.15τ−2772.17+348.12τ135.9τ2+2288.15τ−4215.519+348.12τ=0135.9τ3+2288.15τ2−4215.519τ+348.12τ=0
On solving,
τ=1.596,0.099, −18.52
Considering positive value of temperature τ=1.596
Hence,
τ=TT0=T100+273.15=1.596T=595.55 K
(l)
Interpretation:
Final temperature (T2) of the benzene is to be calculated when some amount of heat is given to the to the benzene.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(l)

Answer to Problem 4.3P
T=476.51 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for benzenein equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dbenzene −0.206 39.064 −13.301 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=−0.206×373.15×(τ−1)+39.064×10−32373.152(τ2−1) +−13.301×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=−76.87(τ−1)+2719.65(τ2−1)−230.36(τ3−1)T∫373.15ΔC∘PRdT=−76.87τ+76.87+2719.65τ2−2719.65−230.36τ3+230.36T∫373.15ΔC∘PRdT=−230.36τ3+2719.65τ2−76.87τ−2412.42
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−230.36τ3+2719.65τ2−76.87τ−2412.42230.36τ3−2719.65τ2+76.87τ+3855.769=0
On solving,
τ=1.277,−1.12, 11.65
Considering positive value of temperature τ=1.277
Hence,
τ=TT0=T100+273.15=1.277T=476.51 K
(m)
Interpretation:
Final temperature (T2) of the ethanolis to be calculated when some amount of heat is given to the to the ethanol.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(m)

Answer to Problem 4.3P
T=380.613 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for ethanol in equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dethanol 3.518 20.001 −6.002 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=3.518×373.15×(τ−1)+20.001×10−32373.152(τ2−1) +−6.002×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=1312.74(τ−1)+1392.48(τ2−1)−103.95(τ3−1)T∫373.15ΔC∘PRdT=1312.74τ−1312.74+1392.48τ2−1392.48−103.95τ3+103.95T∫373.15ΔC∘PRdT=−103.95τ3+2719.65τ2+1312.74τ−2601.27
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−103.95τ3+2719.65τ2+1312.74τ−2601.27103.95τ3−2719.65τ2−1312.74τ+4044.62=0
On solving,
τ=1.02,−1.44, 26.58
Considering positive value of temperature τ=1.02
Hence,
τ=TT0=T100+273.15=1.02T=380.613 K
(n)
Interpretation:
Final temperature (T2) of the styreneis to be calculated when some amount of heat is given to the to the styrene.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(n)

Answer to Problem 4.3P
T=445.91 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for styrene in equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dstyrene 2.050 50.192 −16.662 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=2.050×373.15×(τ−1)+50.192×10−32373.152(τ2−1) +−16.662×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=764.96(τ−1)+3494.39(τ2−1)−288.57(τ3−1)T∫373.15ΔC∘PRdT=764.96τ−764.96+3494.39τ2−3494.39−288.57τ3+288.57T∫373.15ΔC∘PRdT=−288.57τ3+3494.39τ2+764.96τ−3970.78
Given that
Q=12 kJmol⇒Q=12 kJmol×1000 J1 kJ=12000 Jmol
Now from equation (1),
12000 Jmol=RT∫T0ΔCPRdT12000 Jmol=8.314Jmol K×T∫T0ΔCPRdT1443.349 K=T∫T0ΔCPRdT
Put in abovE
1443.349 K=−288.57τ3+3494.39τ2+764.96τ−3970.78288.57τ3−3494.39τ2−764.96τ+5414.126=0
On solving,
τ=1.195,−1.287, 12.2
Considering positive value of temperature τ=1.195
Hence,
τ=TT0=T100+273.15=1.195T=445.91 K
(o)
Interpretation:
Final temperature (T2) of the formaldehydeis to be calculated when some amount of heat is given to the to the formaldehyde.
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Q=nΔH=RT∫T0ΔCPRdT. ...(1)
Where ΔH is heat of reaction at any temperature T .
and
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ) .....(2)
Where τ=TT0
(o)

Answer to Problem 4.3P
T=643.68 K
Explanation of Solution
Given information:
Q= 12 kJ/mol
initial temperature(T1) =1000C. So,
T0=1000C⇒T0=1000C+273.15=373.15 K
T=?oC=T+273.15 K
Values of above constants for formaldehyde in equation (2) are given in appendix C table C.1 and noted down below:
i A 103B 106 C 10−5Dformaldehyde 2.264 7.022 −1.877 0
gas constant R in SI unit is 8.314 Jmol K
Put values in equation (2)
T∫T0ΔC∘PRdT=AT0(τ−1)+B2T02(τ2−1)+C3T03(τ3−1)+DT0(τ−1τ)T∫373.15ΔC∘PRdT=2.264×373.15×(τ−1)+7.022×10−32373.152(τ2−1) +−1.877×10−63×373.153(τ3−1)+0373.15×(τ−1τ)T∫373.15ΔC∘PRdT=844.81(τ−1)+488.88(τ2−1)−32.51(τ3−1)T∫373.15ΔC∘PRdT=844.81τ−844.81+488.88τ2−488.88−32.51τ3+32.51T∫373.15ΔC∘PRdT=-32.51τ3+488.88τ2+844.81τ−1301.18
Given that
Now from equation (1),
Put in abovE
On solving,
Considering positive value of temperature
Hence,
(p)
Interpretation:
Final temperature
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Where
and
Where
(p)

Answer to Problem 4.3P
Explanation of Solution
Given information:
Values of above constants for ammonia in equation (2) are given in appendix C table C.1 and noted down below:
Put values in equation (2)
Given that
Now from equation (1),
Put in abovE
On solving,
Considering positive value of temperature
Hence,
(q)
Interpretation:
Final temperature
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Where
and
Where
(q)

Answer to Problem 4.3P
Explanation of Solution
Given information:
Values of above constants for carbon monoxide in equation (2) are given in appendix C table C.1 and noted down below:
Put values in equation (2)
Given that
Now from equation (1),
Put in abovE
On solving,
Considering positive value of temperature
Hence,
(r)
Interpretation:
Final temperature
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Where
and
Where
(r)

Answer to Problem 4.3P
Explanation of Solution
Given information:
Values of above constants for carbon dioxide in equation (2) are given in appendix C table C.1 and noted down below:
Put values in equation (2)
Given that
Now from equation (1),
Put in abovE
On solving,
Considering positive value of temperature
Hence,
(s)
Interpretation:
Final temperature
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Where
and
Where
(s)

Answer to Problem 4.3P
Explanation of Solution
Given information:
Values of above constants for sulphur dioxide in equation (2) are given in appendix C table C.1 and noted down below:
Put values in equation (2)
Given that
Now from equation (1),
Put in abovE
On solving,
Considering positive value of temperature
Hence,
(t)
Interpretation:
Final temperature
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Where
and
Where
(t)

Answer to Problem 4.3P
Explanation of Solution
Given information:
Values of above constants for water in equation (2) are given in appendix C table C.1 and noted down below:
Put values in equation (2)
Given that
Now from equation (1),
Put in abovE
On solving,
Considering positive value of temperature
Hence,
(u)
Interpretation:
Final temperature
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Where
and
Where
(u)

Answer to Problem 4.3P
Explanation of Solution
Given information:
Values of above constants for nitrogen in equation (2) are given in appendix C table C.1 and noted down below:
Put values in equation (2)
Given that
Now from equation (1),
Put in abovE
On solving,
Considering positive value of temperature
Hence,
(v)
Interpretation:
Final temperature
Concept Introduction:
The final temperature is calculated from below equation where amount of heat is given:
Where
and
Where
(v)

Answer to Problem 4.3P
Explanation of Solution
Given information:
Values of above constants for hydrogen cyanide in equation (2) are given in appendix C table C.1 and noted down below:
Put values in equation (2)
Given that
Now from equation (1),
Put in abovE
On solving,
Considering positive value of temperature
Hence,
Want to see more full solutions like this?
Chapter 4 Solutions
Introduction to Chemical Engineering Thermodynamics
- 8.3 Fractionation of a Protein Solution Four proteins are dissolved in solution. The constants in the Cohn equation (see Example 8.1) for the proteins are given in Table P8.3 along with the concentration of each protein in solution. Assume that the Cohn equation constants are valid when other proteins are present. (a) Determine the maximum percentage recovery of protein 4 that can be obtained if it is desired to obtain a precipitate containing 100% protein 4. (b) Determine the maximum percentage recovery of protein 3 that can be obtained if it is desired to obtain a mother liquor containing 99% protein 3. TABLE P8.3 Protein β K(M-1) Concentration (g/liter) 1 6.30 2.84 0.3 234 10.20 4.34 0.4 8.60 2.48 5.0 8.00 3.97 10.0arrow_forwardPlease solve 5.2 (a) and (b)arrow_forward3. Review the figure below and mark it to indicate where relief devices should be placed. Nitrogen Purge Hexane Storage Water Polymer Storage Polymer Steam- HIC HIC (TIC) (TIC Hexane Coolers #FIC) (W) (PIC (PIC) PD Pump Centrifuge #FIC)arrow_forward
- 2. Review the figure below and mark it to indicate where relief devices should be placed. Steam- Nitrogen (Purge Gas) Crude Methanol PD Pump HIC ☑D TIC TC Water TIC Still Steam PD Pump Drum LIC PIC Tars Methanolarrow_forwardCalculate the thickness of the square mica plates (in ft), having an area of 0.01 sq. is falling at a velocity of 5.0 cm through oil with a density of 55 lb/cu ft and with viscosity of 15 centipoise. The specific gravity of the mica is 3.0. Assume that the particle velocity reaches its maximum and so it becomes cement was, and stokes law applies.arrow_forwardCalculate the thickness of the square mica plates (in ft), having an area of 0.01 sq. is falling at a velocity of 5.0 cm through oil with a density of 55 lb/cu ft and with viscosity of 15 centipoise. The specific gravity of the mica is 3.0. Assume that the particle velocity reaches its maximum and so it becomes cement was, and stokes law applies.arrow_forward
- Liquid ammonia (NH₃) is applied as a fertilizer. You are working for a company that applies the ammonia (they charge a lot for every pound they apply to the soil) and you keep track of the pounds of ammonia that has been applied from the tank on the back end of your pickup (four-wheel drive with big tires). After the liquid has been emptied from the tank, there is still gas ammonia left in the tank. It has been sitting in the sun and its temperature is 125°F. Also, the pressure gauge at the top of the tank shows 230 psig (pounds per square inch gauge). The tank has a volume of 120 ft³. How many pounds of ammonia are left in the tank?arrow_forwardn-Hexane is burned with excess air. An analysis of the product gas yields the following dry-basis molar composition: 7.48% CO2, 1.45% CO, 0.556% C6H14 (with the remainder O2 and N2). The stack gas emerges at 760 mm Hg. Calculate the percentage conversion of hexane, the percentage excess air fed to the burner, and the dew point of the stack gas, taking water to be the only condensable species.arrow_forwardA piston-fitted cylinder with a 5-cm diameter contains 1.65 g of nitrogen. The mass of the piston is 6.50 kg, and a 35.0-kg weight rests on the piston. The gas temperature is 35.0°C, and the pressure outside the cylinder is 3.50 atm. d=5 m₁g N₂ m3kg dcm m2=6.50 m1 1.65 m3 = 35.0 Calculate the pressure in the cylinder. i x 105 Pa eTextbook and Media Save for Later Volume What is the volume of the gas in the cylinder? V = i L m2 kg If the 35.0 kg weight is removed from the piston, how far does the piston move up? i Save for Later m Heat Transferred A How much heat is transferred to (positive) or from (negative) the gas during the expansion? Jarrow_forward
- chemical engineering The answer for the specific molar volume of nitrogen gas is 12.089x10^(-5) m^3/mol. How was this answer determined? You need to use the ideal gas law to determine the specific molar volume. Do not determine the third specific enthalpy.arrow_forwardUsing Raoult's law for water and Henry's law for nitrogen, calculate the pressure and gas-phase composition (mole fractions) in a system containing a liquid that is 0.500 mole% N2 and 99.50 mole% water in equilibrium with nitrogen gas and water vapor at 70.0 °C. The Henry's law constant for nitrogen in water is recommended by NIST to be well represented by KH = 0.000625 exp[1300 (1/T - 1/298.15)] mol N2/(kg H2O bar), where T is measured in Kelvin. Physical Property Tables Unit Conversion Check the unit conversions and examine the definition of H. Estimate the Henry's law constant H [atm/(mole fraction N2)] for nitrogen in water at T = 70.0 °C. i ! x 104 atm/(mole fraction N2)arrow_forwardcan you help me answer this, you can find what the data need in perry's chemical engineering handbook 9th editionarrow_forward
- Introduction to Chemical Engineering Thermodynami...Chemical EngineeringISBN:9781259696527Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark SwihartPublisher:McGraw-Hill EducationElementary Principles of Chemical Processes, Bind...Chemical EngineeringISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEYElements of Chemical Reaction Engineering (5th Ed...Chemical EngineeringISBN:9780133887518Author:H. Scott FoglerPublisher:Prentice Hall
- Industrial Plastics: Theory and ApplicationsChemical EngineeringISBN:9781285061238Author:Lokensgard, ErikPublisher:Delmar Cengage LearningUnit Operations of Chemical EngineeringChemical EngineeringISBN:9780072848236Author:Warren McCabe, Julian C. Smith, Peter HarriottPublisher:McGraw-Hill Companies, The





