LIFE SCIENCE

Detailed explanation-1: -If the free energy change G for a reaction is-46.11 kJ/mol, the reaction is: D) exergonic. (Remember, -delta G=exergonic due to loss of energy while + delta G=endergonic due to energy being required.)

Detailed explanation-2: -In an exergonic reaction, energy is released to the surroundings. The bonds being formed are stronger than the bonds being broken. In an endergonic reaction, energy is absorbed from the surroundings. The bonds being formed are weaker than the bonds being broken.

Detailed explanation-3: -In chemical thermodynamics, an exergonic reaction is a chemical reaction where the change in the free energy is negative (there is a net release of free energy). This indicates a spontaneous reaction if the system is closed and initial and final temperatures are the same.

Detailed explanation-4: -A chemical reaction with a positive ∆G means that the products of the reaction have a higher free energy than the reactants (see the right panel of Figure 2). These chemical reactions are called endergonic reactions, and they are NOT spontaneous.

Detailed explanation-5: -Reactions that have negative G values are called exergonic reactions.