The rate of the reaction
`C Cl_(3)CHO + NO rarr CHC_(3) + NO + CO` is given by Rate `= K[C Cl_(3)CHO][NO]`. If concentration is expressed in moles`//`litre, the units of `K` are

Options

A. `litre^2 mol^(-2)sec^(-1)`
B. `litre^(-1) mol sec^(-1)`
C. `litre mol^(-1) sec^(-1)`
D. `sec^(-1)`

Explanation

It is a second order reaction
`:.n=2" Unit of k "=(mol L^(-1))^(1-n) sec^(-1)`
`=(mol L^(-1))^(-1)sec^(-1)`
`=L mol^(-1) sec^(-1)`