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.
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
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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use the second image as reference for standards

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

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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