Question

question 13 (1 point) if a positive catalyst is added while a reaction is in progress and the energy barrier is reduced, how does it affect the rate of reaction? rate of the reaction first decreases and then increases. rate of the reaction first increases and then decreases. rate of reaction increases. rate of reaction decreases. it does not have any effect on the rate of reaction.

Explanation:

A positive catalyst lowers the activation energy (energy barrier) of a reaction. By reducing the activation energy, more reactant molecules can overcome this barrier and participate in the reaction, which leads to an increase in the rate of reaction. There's no initial decrease or no effect; the catalyst's role is to speed up the reaction by facilitating the reaction pathway with lower energy requirements.

Answer:

Rate of reaction increases.