The reaction CO2(g) + H2O(l) ⇔ H+(aq) + HCO3-(aq) has ΔH° = -12.65 kJ mol-1 and ΔS° = -192.5 J mol-1 K-1. This is actually a coupled reaction. The first step is CO2(g) + H2O(l) ⇔ H2CO3(aq), with ΔH° = -20.35 kJ mol-1 and ΔS° = -96.3 J mol-1 K-1. The second step is H2CO3(aq) ⇔ H+(aq) + HCO3-(aq). Calculate ΔG° (in kJ mol-1) for the second reaction at 25.0 °C.

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Answered: The reaction CO2(g) + H2O(l) ⇔ H+(aq) +…

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter17: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 11Q: The synthesis of glucose directly from CO2 and H2O and the synthesis of proteins directly from amino...

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The reaction CO_2(g) + H₂O_(l) ⇔ H⁺_(aq) + HCO3^-_(aq) has ΔH° = -12.65 kJ mol^-1 and ΔS° = -192.5 J mol^-1 K^-1. This is actually a coupled reaction. The first step is CO_2(g) + H₂O_(l) ⇔ H₂CO_3(aq), with ΔH° = -20.35 kJ mol^-1 and ΔS° = -96.3 J mol^-1 K^-1. The second step is H₂CO_3(aq) ⇔ H⁺_(aq) + HCO₃^-_(aq). Calculate ΔG° (in kJ mol^-1) for the second reaction at 25.0 °C.

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