For a reaction ,`A+B to C ` data is as follows :
`
the rate law for the reaction is

Options

A. Rate `=K[B]^(3)`
B. Rate `=[A]^(2)[B]`
C. Rate `=k[A]^(3)`
D. Rate `=[A][B]^(2)`

Answer

C

Explanation

Compare experiment no 1 and 4.
[B] is constant and [A] is doubled , the rate becomes 8 times i.e., `2^(3)`
` therefore ` for A , n=3
Compare experiment no 1 and 3.
[A] is constant and [B] is dould , the rate is same hence the rate is independent of [B] .
` therefore ` Rate law is Rate `=k [A]^(3)`.