In a zero order reaction, A `to` Products, starting with 0.5 mol `L^(-1)`, if 0.4 mol `L^(-1)` are present after 10 min., the rate constant of the reaction will be

Options

A. `0.05 mol L^(-1) mi n^(-1)`
B. `0.04 mol L^(-1) mi n^(-1)`
C. `10^(-2) mol L^(-1) mi n^(-1)`
D. cannot be determined with the given data

Explanation

For zero order reaction,
`k = 1/t[[A]_0-[A]]= 1/(10min)[0.5 - 0.4] mol L^(-1)`
`= 10^(-2) mol L^(-1) mi n^(-1)`