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The table below provides data for the enthalpy and entropy of formation of compounds A and B at standard conditions (298 K) Compound DHfo (kJ mol-1) Sfo(J K-1mol-1) A –135.2 189.2 B –157.6 192.1   (b) A reversible isomerization reaction converts reactant A to product X. Calculate the Gibbs energy change at non-standard conditions (310 K) if the concentration of A is 2 x 10-4M and that of X is 3 x 10-6 M. Comment on whether the reaction is spontaneous at these conditions.  The equilibrium constant Keq = 0.05. Assume standard temperature is 298K.

The table below provides data for the enthalpy and entropy of formation of compounds A and B at standard conditions (298 K) Compound DHfo (kJ mol-1) Sfo(J K-1mol-1) A –135.2 189.2 B –157.6 192.1   (b) A reversible isomerization reaction converts reactant A to product X. Calculate the Gibbs energy change at non-standard conditions (310 K) if the concentration of A is 2 x 10-4M and that of X is 3 x 10-6 M. Comment on whether the reaction is spontaneous at these conditions.  The equilibrium constant Keq = 0.05. Assume standard temperature is 298K.

Chemistry
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
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  • The table below provides data for the enthalpy and entropy of formation of compounds A and B at standard conditions (298 K)

Compound

DHfo (kJ mol-1)

Sfo(J K-1mol-1)

A

–135.2

189.2

B

–157.6

192.1

 

(b) A reversible isomerization reaction converts reactant A to product X.

Calculate the Gibbs energy change at non-standard conditions (310 K) if the concentration of A is 2 x 10-4M and that of X is 3 x 10-6 M.

Comment on whether the reaction is spontaneous at these conditions. 

The equilibrium constant Keq = 0.05. Assume standard temperature is 298K.

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