An unknown alcohol (C4H10O) reacted slowly with metallic sodium and gave positive results with NaOI. Have you sufficient information to be reasonably certain which of the butyl alcohols the unknown may be? Explain

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.