Consider the following reaction: A (g) + B (g) ⇌ 2 C (g) + D (g)
A reaction mixture initially contains 1.1 M A and 1.0 M B. If the equilibrium concentration of C is 0.75 M, what is the value of the equilibrium constant (Kc) for the reaction?

the answer your looking for is c).

it was spontaneous.

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