Which statement about catalysts is true:
a. A catalyst has no effect upon the enthalpy of reaction
b. A catalyst can cause two normally unreactive particles to react

Question

anonymous · Answer

A is true. Enthalpy refers to the net change in enthalpy between products and reactants. A catalyst decreases the amount of energy you must add to the reactants (activation energy), but the amount of energy in reactants and products is unaffected.