Asolution contains 0.1 m sr2+ ions and 0.1 m ag+ ions. addition of an equal volume of a 0.5 m solution of which reagent will cause precipitation of a strontium salt but not a silver salt?

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.