Practice Problem ATTEMPT
For each of the following, calculate
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Chemistry
- Chemistry Find ΔHfus for water Mass of cup and warm water: 45.67 gFinal mass of cup, water, and melted ice: 69.76 gMass of empty cup: 2.21 gTemperature of warm water: 63 °CTemperature of ice: 0 °CTemperature at equilibrium: 45.2 °Carrow_forwardChoose the reactions (or processes) that are expected to have a negative value for AS°. (Select all that apply.) O co(g) +202(g) → CO2(g) O SiF (aq) + H2(g)→ 2HF(g)+ SiF4(g) O 1(8)2(s) O 02(g) + 2SO2(g) → 2SO3(g) U 2H;O2(aq) → 2H2O(g)+ O2(g)arrow_forwardCalculate ΔS°298 for the following changes.(a) SnCl4(l) ⟶ SnCl4(g)(b) CS2(g) ⟶ CS2(l)(c) Cu(s) ⟶ Cu(g)(d) H2 O(l) ⟶ H2 O(g)(e) 2H2(g) + O2(g) ⟶ 2H2 O(l)(f) 2HCl(g) + Pb(s) ⟶ PbCl2(s) + H2(g)(g) Zn(s) + CuSO4(s) ⟶ Cu(s) + ZnSO4(s)arrow_forward
- Substance X has a heat of vaporization of 55.4 kJ/mol at its normal boiling point (423°C). For the process X(l) → X(g) at 1 atm and 423°C, calculate the value of ΔG . Question 23 options: A) 79.6 J/K•mol B) –79.6 J/K•mol C) 0 D) 103 J/K•mol E) –103 J/K•molarrow_forward#5 Be sure to answer all parts. Determine Δngas for each of the following reactions: (a) MgCO3(s)→MgO(s) + CO2(g) =____mol (b) 2 H2(g) + O2(g)→2 H2O(l) =____mol (c) HNO3(l) + ClF(g)→ClONO2(g) + HF(g) =____molarrow_forwardView Policies Current Attempt in Progress Calculate AG for the reaction given below if the partial pressure of NO2 is 0.229 atm and the partial pressure of N2O4 is 0.464 atm. 2NO2(g) N204(3) AG°298 of this reaction is -5.40 kJ per mole of N,O. T= 298K, R = 8.314 J-mol 1.K-1 Note: Round you answer to 2 decimal places. AG = i kJ mol-1 Where does the system stand relative to equilibrium? O The equilibrium shifts to products. O The system is at equilibrium, so that the reaction will not move. O The equilibrium shifts to reactants. MacBook Air DII 80 888 F9 F10 F5 F6 F7 F8 F3 F4 @ # $ & *arrow_forward
- For a reaction with ΔH = 5.2767 kJ/mol and ΔS = 18 J/K•mol, at 20°C, the reaction is: Spontaneous Not Spontaneous At equilibrium. Please type answer note write by hend.arrow_forwardWhich of the following is true about entropy? (select all that apply) 1) Is a measure of the distribution of energy in a system at a specific temperature. 2) Is a measure of the number of accessible microstates in a pure substance. 3) Is a property of the universe that increases during a spontaneous process. 4) is a property of a system that may increase or decrease during a spontaneous process.arrow_forwardCalculate T (in K) given ΔG^0= -19.4 kJ/mol and ΔH^0= 69.9 kJ/mol and ΔS^0= 253 J/mol KΔG^0=ΔH^0−TΔS^0 A) 706 B) 1,760 C) 353 D) 0.353 E) 118arrow_forward
- O WORDS POWERI QUESTION 29 Consider the reaction of decomposition of liquid Ni(CO)4, (AH° = 189,9 kJ/mol and AS° = 500.5 J/mol K) Ni(CO)4 (1) = Ni (s) + 4 CO (g) (a) Determine AG° for the above reaction at 25°C. (b) Assuming standard states for all reactants and products, is the reaction spontaneous at 25°C?arrow_forwardCalculate T (in K) given ΔG^0= -59.1 kJ/mol and ΔH^0= 45.8 kJ/mol and ΔS^0= 415 J/mol KΔG^0=ΔH^0−TΔS^0 answer choices: a) 506 b) 0.253 c) 253 d) 84.2 e) 1,260arrow_forward5. What is the standard entropy change of the reaction below at 298 K with each compound at the standard pressure? N2(g) + 3H2(g) 2NH3(g) S° 298 (J/mol K) 191.5 130. 6 192.3 (a) -198.7 J/K (b) 76.32 J/K (c) 303.2 J/K (d) -129.7 J/Karrow_forward
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