Which statement is true about the potential energy diagram for an exothermic reaction? the products have less potential energy than reactants. the energy value remains the same throughout the diagram. the graph starts at a lower energy value and ends at a higher energy value. the potential energy of the products is equal to the potential energy of the reactants

The products have less potential energy than reactants.

Explanation:

For an exothermic reaction; the potential energy of the products is less than that of reactants.

Since, ΔH = Pot. energy of products - Pot. energy of reactants.

and it must be negative value.

The attached image shows also the potential energy diagram of an exothermic reaction.

So, the right choice is The products have less potential energy than reactants.

they are all solids.