( A ) The rate of a first-order reaction does not depend on reactant concentrations; the rate of a second-order reaction does depend on reactant concentrations
( B ) A first - order reaction can catalyzed, a second-order reaction cannot be catalyzed
( C ) The half - life of a first - order reaction does not depend on [A]0; the half - life of a second-order reaction does depend on [A]0
( D ) The rate of a first-order reaction does depend on reactant concentrations, the rate of a second-order reaction does not depend on reactant concentrations