Question

A plot between lnk vs $1/T$ is represented for a reaction which has equilibrium constant $=k$ as follows

Then the correct plot for its reverse reaction is:

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

$lnkeq=\frac{-\Delta H^{\circ }}{RT}+\frac{\Delta S^{\circ }}{R}$
Reverse reaction will have $keq=\frac{1}{k}$ .
In $\frac{1}{k}=-\frac{\left(-\Delta H^{\circ }\right)}{RT}+\frac{\left(-\Delta S^{\circ }\right)}{R}$
In $k=\frac{-\Delta H^{\circ }}{RT}+\frac{\Delta S^{\circ }}{R}$