MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

The unit of the rate constant is minutes ^ -1 , which indicates that the decomposition of hydrogen peroxide is a first-order reaction. For a first-order reaction, the half-life is given by: t_ 1/2 = 0.693 k Substituting the given value of k = 0.0204\ minutes ^ -1 : t_ 1/2 = 0.693 0.0204 t_ 1/2 = 33.97\ minutes Answer: 33.97 minutes