Calculate the total enthalpy in kJ of a 0.564 g sample of steam at 100oC going through various phase change steps to become ice at 0oC. Molar mass for H2O is 18.015 g/mol
Calculate the total enthalpy in kJ of a 0.564 g sample of steam at 100oC going through various phase change steps to become ice at 0oC. Molar mass for H2O is 18.015 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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Question
Calculate the total enthalpy in kJ of a 0.564 g sample of steam at 100oC going through various phase change steps to become ice at 0oC. Molar mass for H2O is 18.015 g/mol.
![+200
Heat liberated
5
+150
4 Boiling
+100
STEAM
(100 –200°C)
3
LIQUID WATER (0 –100°C)
+50
Melting
2
1
ICE (-50 – 0°C)
Heat absorbed
- 50
200
400
600
800
1000
1200
1400
1600
Heat (kJ)
Temperature (°C)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3e097726-e235-48db-8460-9fb94c8c3da0%2Fc5f151ba-7050-4d73-88e7-44cfcc671505%2Fp7bfw3n_processed.png&w=3840&q=75)
Transcribed Image Text:+200
Heat liberated
5
+150
4 Boiling
+100
STEAM
(100 –200°C)
3
LIQUID WATER (0 –100°C)
+50
Melting
2
1
ICE (-50 – 0°C)
Heat absorbed
- 50
200
400
600
800
1000
1200
1400
1600
Heat (kJ)
Temperature (°C)
![Use the following data for your calculations:
Table 1 9.2
•..
Specific heat and molar heat capacities for some common substances 4
Molar Heat Capacity, C,
(J mol 1 K ')
Specific Heat, c
Substance
(J 8'K ')
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
Table 1 9.3
•..
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
AH (J/mol)
ΔΗ
6009.5
ΔΗ
AHfus
AHfreeze =
-6009.5
AHcond =
-4.07 × 10*
vap
4.07 × 10*](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3e097726-e235-48db-8460-9fb94c8c3da0%2Fc5f151ba-7050-4d73-88e7-44cfcc671505%2Fs7h0dvd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Use the following data for your calculations:
Table 1 9.2
•..
Specific heat and molar heat capacities for some common substances 4
Molar Heat Capacity, C,
(J mol 1 K ')
Specific Heat, c
Substance
(J 8'K ')
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
Table 1 9.3
•..
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
AH (J/mol)
ΔΗ
6009.5
ΔΗ
AHfus
AHfreeze =
-6009.5
AHcond =
-4.07 × 10*
vap
4.07 × 10*
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