Question

The net energy released or absorbed during a reversible chemical reaction is equal to

(1) the activation energy of the endothermic reaction
(2) the activation energy of the exothermic reaction
(3) the difference between the potential energy of the products and the potential energy of the reactants
(4) the sum of the potential energy of the products and the potential energy of the reactants

Answer 1

3. The difference between the potential energy of the products and the potential energy of reactants.

Answer 2

Answer: The correct answer is Option 3.

Step-by-step explanation:

The net energy absorbed or released in a reaction is known as total enthalpy change of the reaction. It is designated as
`\Delta H_(rxn)`

It is defined as the difference between the total potential energy of the products and the total potential energy of the reactants. The equation for this is given by:

`\Delta H_(rxn)=\sum \Delta H_(products)-\sum \Delta H_(reactants)`

where,

`\Delta H_(products)` = Total potential energy of the products

`\Delta H_(reactants)` = Total potential energy of the reactants

Hence, the correct answer is Option 3.