Unit of the constant of zero order reaction is

Options

A. `"time"^(-1)`
B. `"mol L"^(-1) s^(-1)`
C. `"L mol"^(-1) s^(-1)`
D. `"L mol"^(-1)s^(-1)`

Answer

B

Explanation

For zero order reaction
Rate `= k["conc."]^(0)=k`
or `k=("Change in concentration")/("time taken")=("mol/L")/("s")`
`:.` units of k are `"mol L"^(-1)s^(-1)`.