MSG is mistakenly thought of as being high in sodium. However, MSG contains only one-third the amount of sodium as table salt (MSG contains about 12 percent sodium while table salt contains 39 percent sodium). Moreover, MSG represents a minor contribution to the overall sodium level of a typical diet.
Endergonic reactions. In an endergonic reaction the free energy of the initial state is lower than the free energy of the final state. This kind of reaction is not termed a spontaneous reaction. In order to go from the initial state to the final state a considerable amount of energy must be imparted to the system.
Exergonic means releasing energy in the form of work. In these reactions, energy is released from the system to the outside. Exergonic reactions are favorable and spontaneous. Because the energy is released during the reaction, the products contain less energy than the reactants.