Identify the order of reaction if its rate constant is \(k = 2 × 10^{-2}s^{-1}\)

Zero order First order Second order Half order

First order

The correct answer is option 2. First order. The given rate of reaction is \(k = 2 × 10^{-2}s^{-1}\). The unit of rate constant is \(s^{-1}\). We know from the unit of rate constant that the reaction belongs to a first order reaction.