Question

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

Answer 1

Answer: The correct answer is Option 3.

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.

Answer 2

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