We are being asked to calculate the equilibrium constant, Kc for the given equilibrium reaction:
A + 2B ⇌ C
When dealing with equilibrium and Kc:
• Kc → equilibrium units are in molarity
• Kc is an equilibrium expression:
▪ only aqueous and gaseous species are included in the equilibrium expression
▪ the coefficient of each compound in the reaction equation will be the exponent of the concentrations in the equilibrium expression
A mixture initially contains A, B, and C in the following concentrations: [A] = 0.350 M, [B] = 1.40 M, and [C] = 0.700 M. The following reaction occurs and equilibrium is established:
A + 2B ⇌ C
At equilibrium, [A] = 0.170 M and [C] = 0.880 M. Calculate the value of the equilibrium constant, Kc.
Express your answer numerically.
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