If 10.27 kJ of heat is given off when 51.93 g of unknown acid condenses from vapor to liquid, what is AHcond for this substance? The corresponding molecular weight is 45.16 g/mol.

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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use the second image as reference for standards
Standard molar enthalpies and temperatures for phase changes of water
Phase
Change
Fusion
Freezing
Vaporization
Condensation
Transition
0°C
0°C
100°C
100°C
Temperature
ΔΗ
6009.5
AHvap
4.07 × 10*
AHcond
-4.07 × 10*
AH (J/mol)
AHfreeze
-6009.5
Specific Heat, c
(Jg'K*)
Molar Heat Capacity, C,
(J mol1 K^1)
Substance
Al(s)
0.900
24.3
Cu(s)
0.385
24.5
H;O(s)
2.09
37.7
H,O(()
4.18
75.3
H;O(g)
2.03
36.4
Transcribed Image Text:Standard molar enthalpies and temperatures for phase changes of water Phase Change Fusion Freezing Vaporization Condensation Transition 0°C 0°C 100°C 100°C Temperature ΔΗ 6009.5 AHvap 4.07 × 10* AHcond -4.07 × 10* AH (J/mol) AHfreeze -6009.5 Specific Heat, c (Jg'K*) Molar Heat Capacity, C, (J mol1 K^1) Substance Al(s) 0.900 24.3 Cu(s) 0.385 24.5 H;O(s) 2.09 37.7 H,O(() 4.18 75.3 H;O(g) 2.03 36.4
If 10.27 kJ of heat is given off when 51.93 g of unknown acid condenses from vapor to liquid, what is AHcond
for this substance? The corresponding molecular weight is 45.16 g/mol.
Round your answer to 2 decimal places.
Transcribed Image Text:If 10.27 kJ of heat is given off when 51.93 g of unknown acid condenses from vapor to liquid, what is AHcond for this substance? The corresponding molecular weight is 45.16 g/mol. Round your answer to 2 decimal places.
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