Infer from a standard free energy change whether a reaction is exergonic or endergonic

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The efficiency of a system is determined by its free energy. It explains how the system can work as well as how they are being changed. This can be expressed as Helmholtz free energy and Gibb's free energy. This helps in finding the direction of a reaction.
At constant temperature and pressure, the energy taken from a system is termed as free energy. This has wide range of application in biology, chemistry and also physics. In biology this can be considered as the energy in a molecule that can be used to perform a particular function.
In thermodynamics, a reaction is said to be endergonic when it absorbs free energy from surroundings. In that case the standard free energy will be positive. Such reactions are non spontaneous. This means that an input of energy is needed to carryout the reaction. The Gibb's free energy will be greater than 0 under constant pressure and concentrations.
When the standard free energy change is negative, it indicate that reaction is exergonic reaction. This type of reactions release energy and heat into the atmosphere. Because chemical mixture loses free energy the value of Gibbs energy will be negative. And it will be a spontaneous reaction. Cellular respiration is an example for exergonic reaction. As this is spontaneous it increases the disorder and entropy of the universe increases each time an exergonic reaction takes place.

Infer from a standard free energy change whether a reaction

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