68. Consider the reaction: CaCO3(s) → Cao (s) + CO₂ (g) Estimate AG° for this reaction at each temperature and predict whether or not the reaction is spontaneous. (Assume that AH° and AS° do not change too much within the given temperature range.) a. 298 K b. 1055 K c. 1455 K

68. Consider the reaction: CaCO3(s) → Cao (s) + CO₂ (g) Estimate AG° for this reaction at each temperature and predict whether or not the reaction is spontaneous. (Assume that AH° and AS° do not change too much within the given temperature range.) a. 298 K b. 1055 K c. 1455 K

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Chapter17: Equilibrium

Section: Chapter Questions

Problem 12A

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Question

68. Consider the reaction:
CaCO3(s) → Cao (s) + CO₂ (g)
Estimate AG for this reaction at each temperature and predict whether or not the reaction is
spontaneous. (Assume that AH° and AS° do not change too much within the given temperature range.)
a. 298 K
b. 1055 K
c. 1455 K

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Step 3: Reaction given

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Step 4: Gibbs free energy for temperature 298K

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Step 5: Gibbs free energy for temperature 1055K

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Step 6: Gibbs free energy for temperature 1455K

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