Rate is expressed in `mol L^(-1) min^(-1)`.
In the above reaction, the order is

Options

A. Zero in `A` and one in `B`
B. One in `A` and zero in `B`
C. One in both `A` and `B`
D. Zero in both `A` and `B`

Answer

B

Explanation

In experiments (1) and (3), `[A]` is constant and `[B]` becomes double, but rate does not change, so order w.r.t `B=0`.
In experimetn (1) and (2), `[B]` is constant and `[A]` is double and the rate also is doubled. So order w.r.t `[A]=1`.