SEARCH Articles Figures Tables Conversion of a First-Order Reaction in Ideal Reactors with Completely Segregated Flow First reaction First-Order Reactions. The Concept of Effectiveness First-order rate constant of reaction First-order reactions First-order reactions reaction Irreversible Reactions of First Order Opposing Reactions of First Order Order of reaction Reactions of the first order Reversible First-Order Reaction with the Influence of External and Internal Mass Transfer Sequence of First-order Reactions Series of first-order reactions Systems of first-order reactions The Rate of a First-order Reaction at Constant Temperature