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Chemistry Question on Rate of a Chemical Reaction

Units of rate constant for first and zero order reactions in terms of molarity MM unit are respectively

A

M sec−1, sec−1M \,sec^{-1}, \,sec^{-1}

B

M sec−1M\,sec^{-1}

C

sec−1,M sec−1sec^{-1}, M \,sec^{-1}

D

sec−1,Msec^{-1}, M

Answer

sec−1,M sec−1sec^{-1}, M \,sec^{-1}

Explanation

Solution

Unit of rate constant =[1M]n−1time−1=\left[\frac{1}{M}\right]^{n-1} time^{-1} for zero order, [1M]−1sec−1=M sec−1\left[\frac{1}{M}\right]^{-1} sec^{-1}=M \,sec^{-1} for first order , [1M]1−1sec−1=sec−1\left[\frac{1}{M}\right]^{1-1} sec^{-1}=sec^{-1}