In a unimolecular reaction with seven times as much starting material as product at equilibrium, what is the value of keq?

K_eq = 0.14

The chemical equation is  

A ⇌ B

The equilibrium constant expression is

K_eq = [B]/[A]

If [A] = 7[B]

K_eq = [B]/{7[B]}= 1/7 = 0.14

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