AG(ky/mol)SUbStance / 1onso(ky/mol)-1206.9/moi k)92.9• CaC03l>)-|128.8• CaO (s)|- 635. I– 60 3.538.2• CO2(9)- 393.5- 394.4213.7191.53 H2(g)202.7ZNH3 )-45.9-16193• Hz (g)202.7223.0-92.31- 95. 30186.79 2.) Use the standard enthalpy values in Appendix 2 to calculate the standard entropy changesfor the following reactions at 25°C.(а) СаСО3(s) —> СаO(s) + CO2(g)(b) N2(g) + 3H2(g) -· 2NH3(g)(c) H2(g) + Cl2(g) → 2HC1(g)

Entropy changes for the following reactions are: ∆Sreaction° = ∑n×S°product - ∑ n×S°reactant

2.) Use the standard enthalpy values in Appendix 2 to calculate the standard entropy changes for the following reactions at 25°C. (a) CACO3(s) → CaO(s) + CO2(g) (b) N2(g) + 3H2(g) → 2NH3(g) (c) H2(g) + Cl2(g)→ 2HCI(g)

2.) Use the standard enthalpy values in Appendix 2 to calculate the standard entropy changes for the following reactions at 25°C. (a) CACO3(s) → CaO(s) + CO2(g) (b) N2(g) + 3H2(g) → 2NH3(g) (c) H2(g) + Cl2(g)→ 2HCI(g)

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

AG
(ky/mol)
SUbStance / 1on
so
(ky/mol)
-1206.9
/moi k)
92.9
• CaC03l>)
-|128.8
• CaO (s)
|- 635. I
– 60 3.5
38.2
• CO2(9)
- 393.5
- 394.4
213.7
191.5
3 H2(g)
202.7
ZNH3 )
-45.9
-16
193
• Hz (g)
202.7
223.0
-92.31
- 95. 30
186.79

2.) Use the standard enthalpy values in Appendix 2 to calculate the standard entropy changes
for the following reactions at 25°C.
(а) СаСО3(s) —> СаO(s) + CO2(g)
(b) N2(g) + 3H2(g) -
· 2NH3(g)
(c) H2(g) + Cl2(g) → 2HC1(g)

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