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# In an equilibrium reaction, for which $\Delta {G^ \circ } = 0$ , the equilibrium constant $K$ should be equal to:(A) Zero(B) $10$ (C) $1$ (D) $2$

Last updated date: 18th Mar 2023
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Hint :A reaction that is non-spontaneous will have a positive $\Delta {G^ \circ }$ and a small $K$ value. When $\Delta {G^ \circ }$ is equal to zero and $K$ is around one, the reaction is said to be at equilibrium. The value of $K$ depends on temperature.

In an equilibrium reaction, for which $\Delta {G^ \circ } = 0$ , the equilibrium constant $K$ should be equal to one because:
We know that: $\Delta {G^ \circ } = - RT\ln K$
$\ln K = 0$
$K = 1$