The value of KC for the reaction 2A ⇌ B + C is 2 x 10-3. At a given

1.	The value of KC for the reaction 2A ⇌ B + C is 2 x 10-3. At a given time, the composition of reaction mixture is [A] [B] [C] = 3 x 10-4 M. In which direction the reaction will proceed?
Answer» For the reaction, the reaction quotient Q is given by Q_C = ([B] [C]) / [A]² as [A] = [B] = [C] = 3 x 10^-4 M Q_C = (3 x 10^-4)(3 x 10^-4) / (3 x 10^-4)² = 1 as Q_C > K_C so, the reaction will proceed in the reverse direction.

The value of KC for the reaction 2A ⇌ B + C is 2 x 10-3. At a given time, the composition of reaction mixture is [A] [B] [C] = 3 x 10-4 M. In which direction the reaction will proceed?

Answer»

For the reaction, the reaction quotient Q is given by

Q_C = ([B] [C]) / [A]²

as [A] = [B] = [C] = 3 x 10^-4 M

Q_C = (3 x 10^-4)(3 x 10^-4) / (3 x 10^-4)² = 1

as Q_C > K_C so, the reaction will proceed in the reverse direction.