Most reactions between an acid and a base form a salt and water. which describes an acid-base reaction?
a. synthesis b. decomposition c. double-replacement reaction d. single-replacement reaction

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.