Question

Sometimes chemicals won't react without a catalyst to help them along. The enzyme changes the required activation energy of the reaction. Pick from the following statements the one which you believe correctly describes the role of the catalyst in the reaction. a.) The catalyst lowers the required activation energy b.) The catalyst raises the activation energy; the added energy allows the reaction to complete c.) The catalyst does not change the activation energy; it only speeds up the reaction

Answer 1

Answer is: a.) The catalyst lowers the required activation energy

Explanation:

Activation energy is the energy which is needed to break reactant molecules bonds.

Catalysts decreases the activation energy and increases the rate of a chemical reaction.

By lowering the activation energy more reactant molecules collide with enough energy to overcome the smaller energy barrier.

It increases reaction time and not used up in reaction or change the chemical reaction. They are not reactant.

It provides a surface for the reactants to collide, it uses electrons and weaken the bonding between reactants and lowers the activation energy.