What is Gibbs free energy and why is it significant in chemical reactions?

• A. Gibbs free energy is the energy stored in the chemical bonds of reactants.
• B. Gibbs free energy is the energy associated with a chemical reaction that can be used to do work, and it determines the spontaneity of the reaction.
• C. Gibbs free energy is the energy required to break chemical bonds in a reaction.
• D. Gibbs free energy is the total energy of a system, including kinetic and potential energy.

Answer: (B)