Question

Deduce relationship which shows the gibbs free energy change is equal to useful work done ? ?????



in chemistry
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Answer 1

The relationship is W (useful) = ΔH - TΔS = Δ( H - TS) = ΔG

Explanation:

• Gibbs free energy, internal energy, and enthalpy all are state functions.
• The relationship equation between them is given below;
• ΔU = q + w
• Here ΔU is the change in internal energy
• q = heat
• W = amount of work done.
• The Gibs free energy relation is
• G = H - TS
• Now
• ΔG = H - TS
• The equation describing useful work done by gibs free energy can be derived from the above equation s below.
• W (useful) = ΔH - TΔS = Δ( H - TS) = ΔG