Consider the reactions (data for 25°C),i) Pb(s) + CO(g) → PbO(s) + C(s) ΔH° = −107 kJ mol−1 ΔG° = −51 kJ mol−1ii) 2 C(s) + O2(g) → 2 CO(g) ΔH° = −221 kJ mol−1 ΔG° = −274 kJ mol−1Which are True?a ΔS° for reaction 2 is −189 J K−1mol−1.b Both reactions are spontaneous at 25°C under standard conditions.c Reaction 1 is spontaneous at 500°C and 1 bar partial pressure of CO.d Reaction 2 is spontaneous at 500°C and 1 bar partial pressure of O2 and CO.

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Answered: Consider the reactions (data for 25°C),…

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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Consider the reactions (data for 25°C),
i) Pb(s) + CO(g) → PbO(s) + C(s) ΔH° = −107 kJ mol⁻¹ ΔG° = −51 kJ mol⁻¹
ii) 2 C(s) + O₂(g) → 2 CO(g) ΔH° = −221 kJ mol⁻¹ ΔG° = −274 kJ mol⁻¹

^{Which are True?}

a ΔS° for reaction 2 is −189 J K⁻¹mol⁻¹.

b Both reactions are spontaneous at 25°C under standard conditions.

c Reaction 1 is spontaneous at 500°C and 1 bar partial pressure of CO.

d Reaction 2 is spontaneous at 500°C and 1 bar partial pressure of O₂ and CO.

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