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
energy
activation energy without catalyst
activation energy with catalyst
reactants
products
progress of reaction
having a catalyst present changes the activation energy of a reaction in unpredictable ways
having a catalyst present decreases the activation energy of a reaction
having a catalyst does not change the activation energy of a reaction
having a catalyst present increases the activation energy of a reaction

Explanation:

Catalysts work by providing an alternative reaction pathway with a lower activation energy. This is a fundamental concept in chemistry. From the graph, we can see that the activation - energy with a catalyst (red) is lower than without a catalyst (blue).

Answer:

Having a catalyst present decreases the activation energy of a reaction