Examine the reaction coordinate diagrams below. Each diagram compares two reacti

Question

Examine the reaction coordinate diagrams below. Each diagram compares two reactions, one shown by a red, dashed line, and the other by a gray, solid line, which is a reference reaction and is the same in every case. In each case, consider the overall equilibrium constants for the two reactions, and the rate constant for conversion of ES to EP. State whether Keq and k for the red, dashed reaction are increased, decreased, or the same, relative to the reference reaction.

E S ES EP E P E S ES EP E P E S ES EP E P rxn coordinate rxn coordinate rxn coordinate E S ES EP E+ P E S ES EP E P rxn coordinate rxn coordinate

Explanation / Answer

For the graph,

A. The Keq and k for the red dashed line are increased.

B. For this reaction, Keq and k are decreased.

C. Here both Keq and k are the same as reference.

D. Here Keq has increased but k is decreased relative to reference.

E. the Keq and k are the same as reference

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