Question

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

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

The potential energy of the products is less than that of the reactants and the change in enthalpy is positive.

 

The potential energy of the products is greater than that of the reactants and the change in enthalpy is negative.  

The potential energy of the products is less than that of the reactants and the change in enthalpy is negative.

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

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

Step-by-step 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.