What is the standard heat of reaction for the following reaction?

a. 216.8 kJ released per mole
b. 88.0 kJ released per mole
c. 88.0 kJ absorbed per mole
d. 216.8 kJ absorbed per mole

The correct answer to the question is

The standard heat of reaction for the reaction is

a. 216.8 kJ released per mole

Explanation:

The heat of reaction is given by [Heat of formation of products] - [Heat of formation of reactants]

In the question we have, heat of formation of the products Zn+2 (aq) = -152.4 kJ/mole and the heat of formation of the reactants = 64.4 kJ/mole

Therefore, the heat of formation of the reaction = (-152-64.4) kJ/mole or

-216.8 kJ/mole released