GENERAL KNOWLEDGE

Detailed explanation-1: -Gibbs free energy, also known as the Gibbs function, Gibbs energy, or free enthalpy, is a quantity that is used to measure the maximum amount of work done in a thermodynamic system when the temperature and pressure are kept constant. Gibbs free energy is denoted by the symbol ‘G’.

Detailed explanation-2: -The Gibbs free energy (Gibbs energy or Gibbs function or free enthalpy to distinguish it from Helmholtz free energy) is a thermodynamic potential that measures the maximum or reversible work by a thermodynamic system at a constant temperature and pressure [3].

Detailed explanation-3: -The change in Gibbs energy is equal to the maximum amount of work that a system can perform on the surroundings while undergoing a spontaneous change (at constant temperature and pressure): G=wmax.

Detailed explanation-4: -Gibbs Energy is a state function defined as G=H–TS. The practical utility of the Gibbs function is that G for any process is negative if it leads to an increase in the entropy of the world. Thus spontaneous change at a given temperature and pressure can only occur when it would lead to a decrease in G.