Question

Which set of conditions shows that the reaction A B is at equilibrium? (Assume that the forward and reverse reactions are first-order reactions.)

            a. k_{forward reaction} = 4.2 x 10^-2 s^-1 , [A] = 0.25 M , k_{reverse reaction} = 1.4 x 10^-2 s^-1, [B] = 0.25 M

            b. k_{forward reaction} = 0.48 s^-1, [A] = 1.8 M , k_{reverse reaction} = 9.5 x 10^-4 s^-1, [B] = 9.0 M

            c. k_{forward reaction} = 1.1 x 10^-1 s^-1 , [A] = 0.90 M , k_{reverse reaction} = 3.2 x 10^-1 s^-1, [B] = 3.0 M

            d. k_{forward reaction} = 2.4 x 10^-1 s^-1 , [A] = 0.20 M , k_{reverse reaction} = 2.4 x 10^-1 s^-1, [B] = 0.80 M

            e. k_{forward reaction} = 2.4 x 10^-1 s^-1 , [A] = 0.20 M , k_{reverse reaction} = 4.8 x 10^-1 s^-1, [B] = 0.10 M

Answer 1