Question

Explain how free energy change is related to the spontaneity of a reaction. What conditions do you need for this to occur? Give 2 different terms for ΔG and ΔH.

Answer 1

In chemistry, the free energy change (ΔG) is related to the spontaneity of a reaction. If ΔG is negative, the reaction is spontaneous, meaning it can occur without any outside intervention. The conditions for a spontaneous reaction include a decrease in enthalpy (ΔH) and an increase in entropy (ΔS).

Step-by-step explanation:

In chemistry, the free energy change (ΔG) is related to the spontaneity of a reaction. If ΔG is negative, the reaction is spontaneous, meaning it can occur without any outside intervention. If ΔG is positive, the reaction is non-spontaneous and requires an input of energy to occur. The conditions for a spontaneous reaction include a decrease in enthalpy (ΔH) and an increase in entropy (ΔS). When temperature and pressure are constant, the relationship between ΔG, ΔH, and ΔS is given by the equation: ΔG = ΔH - TΔS. Two different terms for ΔG and ΔH are Gibbs free energy and enthalpy, respectively.