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# Relationship between Gibbs Free Energy and Equilibrium Constant

CHEM-X1IKSE

For the following reaction: $PCl_{5}(g) \leftrightarrow PCl_{3}(g) + Cl_{2}(g)$, $K_{c}=0.030$.

What is $\Delta G^{\circ}$ for this reaction?

A

$0.30$

B

$-85.7$

C

$8.69 \times 10^{3}$

D

$-8.69 \times 10^{3}$