Chapter 19.3, Problem 20R

To determine

Toexplain: the reason why energy doesn’t decrease in a exergonic chemical reaction.

Explanation of Solution

Introduction:

An exergonic reaction is a chemical reaction where the change in free energy is negative, suggesting a spontaneous reaction (there is a net release of free energy).

Exergonic reactions are the chemical reactions which releases energy. Exergonic reactions don’t need any input energy.

According to the first law of thermodynamics, the total energy in universe is a constant and it is neither created nor destroyed. This is the reason why total amount of energy doesn’t decrease in exergonic reaction.