The rate equation for the reaction `2A+B rarr C` is found to be: `rate = k[A][B]`. The correct statement in relation of this reaction is that

Options

A. Unit of `k` must be `s^(-1)`
B. Value of `k` is dependent of the initial concentration of A and B
C. Rate of formation of c is twice the rate of disappearance of A
D. `t_(1//2)` is a constant

Answer

B

Explanation

Rate `=k[A][B]`
(A) It is a second order reaction
Unit of `k=("mol L"^(-1)"s"^(-1))/(("mol L"^(-1))^(2))="L mol"^(-1)"s"^(-1)`
(B) Value of `k` is always independent of the initial conc.
(C) Rate of formation of C is 1/2 of the rate of disappearance of A
(D) For a second order reaction `t_(1//2)` is not constant (it depends upon initial conc.)