Question

[06.04]On a potential energy diagram, the activation energy is greatest under which of the following conditions?

Answer 1

The first one is the correct answer: The potential energy of the products is greater than that of the reactants and the change in enthalpy is positive. 

Answer 2

Answer:

The correct answer is "The potential energy of the products is greater than that of the reactants and the change in enthalpy is positive. "

Explanation:

Positive enthaply means that it is an endothermic process or heat is absorbed by the reactants in the formation of the products.

Reactant + heat --> Product

In an endothemic reaction the energy of the products on a potential energy diagram is greater than that of the reactants.

Negative enthaply means that it is an exothermic process or heat is released  in the formation of the products.

Reactant  --> Product + heat

In an exothemic reaction the energy of the products on a potential energy diagram is lesser than that of the reactants.