### Thermodynamics and Electrochemistry Problems#### Problem 15**Calculate the \(\Delta G^\circ_{\text{rxn}}\) at 298 K using the following information.**\[2 \text{HNO}_3(\text{aq}) + \text{NO}(\text{g}) \rightarrow 3 \text{NO}_2(\text{g}) + \text{H}_2\text{O}(\text{l})\]- \(\Delta H^\circ_f\) (kJ/mol): - \(\text{HNO}_3(\text{aq})\): -207.0 - \(\text{NO}(\text{g})\): 91.3 - \(\text{NO}_2(\text{g})\): 33.2 - \(\text{H}_2\text{O}(\text{l})\): -285.8 - \(S^\circ\) (J/mol·K): - \(\text{HNO}_3(\text{aq})\): 146.0 - \(\text{NO}(\text{g})\): 210.8 - \(\text{NO}_2(\text{g})\): 240.1 - \(\text{H}_2\text{O}(\text{l})\): 70.0**Options:**- A) +50.8 kJ - B) -151 kJ - C) +222 kJ - D) -85.5 kJ - E) -186 kJ#### Problem 16**What is the reducing agent in the redox reaction represented by the following cell notation?**\[ \text{Ni}(s) \ | \ \text{Ni}^{2+}(\text{aq}) \ || \ \text{Ag}^{+}(\text{aq}) \ | \ \text{Ag}(s) \]**Options:**- A) Ag(s) - B) Pt - C) Ag\((aq)^+\) - D) Ni(s) - E) Ni\((aq)^{2+}\)#### Problem 17**What is the reduction half-reaction for the following overall galvanic cell reaction?**

Answered: Image /qna-images/answer/a0d512a5-dd05-4f0d-b336-1b970ba0804e.jpg

15) Calculate the AG°₁ AHᵒf (kJ/mol) S°(J/mol K A) +50.8 kJ rxn at 298 K using the following information. 2 HNO3(aq) + NO(g) → 3 NO2(g) + H₂O(l) -207.0 91.3 33.2 -285.8 146.0 210.8 240.1 70.0 B) -151 kJ C) +222 kJ A) Co2+ (aq) + e- → > Co(s) C) Co2+ (aq) + 2e- → Co(s) AG°rxn = ? C) Ag+ (aq) D) -85.5 kJ 16) What is the reducing agent in the redox reaction represented by the following cell notation? Ni(s) | Ni2+ (aq) || Ag+ (aq) | Ag(s) B) Pt A) Ag(s) 17) What is the reduction half-reaction for the following overall galvanic cell reaction? Co2+(aq) + 2 Ag(s) → Co(s) + 2 Ag+(aq) D) Ni(s) E) -186 kJ B) Ag+ (aq) + e- → Ag(s) Ag+ (aq) D) Ag(s) + e- E) Ni2+ (aq)

15) Calculate the AG°₁ AHᵒf (kJ/mol) S°(J/mol K A) +50.8 kJ rxn at 298 K using the following information. 2 HNO3(aq) + NO(g) → 3 NO2(g) + H₂O(l) -207.0 91.3 33.2 -285.8 146.0 210.8 240.1 70.0 B) -151 kJ C) +222 kJ A) Co2+ (aq) + e- → > Co(s) C) Co2+ (aq) + 2e- → Co(s) AG°rxn = ? C) Ag+ (aq) D) -85.5 kJ 16) What is the reducing agent in the redox reaction represented by the following cell notation? Ni(s) | Ni2+ (aq) || Ag+ (aq) | Ag(s) B) Pt A) Ag(s) 17) What is the reduction half-reaction for the following overall galvanic cell reaction? Co2+(aq) + 2 Ag(s) → Co(s) + 2 Ag+(aq) D) Ni(s) E) -186 kJ B) Ag+ (aq) + e- → Ag(s) Ag+ (aq) D) Ag(s) + e- E) Ni2+ (aq)

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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Chemistry
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