Units of rate constant of first and zero order reactions in terms of molarity `M` are respectively:

Options

A. `s^(-1), M L^(-1) s^(-1)`
B. `s^(-1), M`
C. `Ms^(-1), s^(-1)`,
D. `M, s^(-1)`,

Answer

A

Explanation

`K = (dx)/(d t[A])` for `I` order `= sec^(-1)`
`k = (d x)/(d t)` for zero order,
`= "mol litre"^(-1) sec^(-1)`
or `k = ["mol"^(-1) L^(-1)]^(+n) sec^(-1)`
`rArr n = 1`
`k = sec^(-1)`
Zero order, `n = 0`
`k = "mol L"^(-1) sec^(-1)`