Question

the following shows the difference between a reaction with a catalyst (in red) and a reaction without a catalyst (in blue). select the following statement that is true? possible points: 1 having a catalyst increases the activation energy of a reaction having a catalyst changes the activation energy of a reaction in unpredictable ways having a catalyst decreases the activation energy of a reaction having a catalyst does not change the activation energy of a reaction

Explanation:

A catalyst is a substance that speeds up a chemical reaction by lowering the activation energy required for the reaction to occur. It does not get consumed in the reaction and does not change the thermodynamics of the reaction (such as the energy of the reactants or products). The graph clearly shows that the activation energy for the reaction with a catalyst (red line) is lower than that for the reaction without a catalyst (blue line).

Answer:

Having a catalyst present decreases the activation energy of a reaction.