The reaction A→k Products, is zero order while the reaction B→kProducts, is 1st order. For what initial concentration of A the half-lives of the two reactions are equal. Assume rate constants of both reactions are same

A→kProduct                                  B→kProductzero order                               First order  t1/2=a2K                               t1/2=ln⁡2K⇒a2K=ln⁡2K                                                                  ⇒ a=2ln⁡2