Consider the reaction: 2 A (s) + 10.4 kJ ------ 2 B (s) + 3 C (g), at what temperature(s) would you expect the reaction to be spontaneous if the entropy change is 20 J/k? A. T = 520 K B. T < 520 K C. T > 520 K D. T > 208 K E. T < 208 K
Consider the reaction: 2 A (s) + 10.4 kJ ------ 2 B (s) + 3 C (g), at what temperature(s) would you expect the reaction to be spontaneous if the entropy change is 20 J/k? A. T = 520 K B. T < 520 K C. T > 520 K D. T > 208 K E. T < 208 K
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter10: Entropy And The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 10.7PAE: On the basis of your experience, predict which of the following reactions are spontaneous. (a)...
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14. Consider the reaction: 2 A (s) + 10.4 kJ ------ 2 B (s) + 3 C (g), at what
temperature(s) would you expect the reaction to be spontaneous if the entropy change
is 20 J/k?
A. T = 520 K B. T < 520 K C. T > 520 K D. T > 208 K E. T < 208 K
Expert Solution
Step 1
For any reaction to be spontaneous, its Gibbs energy must be negative i.e below 0.
Here, the reaction is given enthalpy of 10.4KJ or 10400 J energy.
And entropy of the reaction is 20 J/K
Both entropy and enthalpy are positive for this reaction.
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