Question

A decrease of free energy accompanying a reaction gives​

Answer 1

Answer:

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Answer 2

For a chemical reaction to be spontaneous, it should have negative value of the Gibbs free energy change ΔG.

ΔG=ΔH−TΔS

Consider following chemical reactions:

A→B , ΔG=+X ......(1)

C→D, ΔG=−Y ...... (2)

If the magnitude of ΔG for second reaction is greater than the magnitude of ΔG for first reaction, ∣Y∣>∣X∣, then if we add the reactions (1) and (2), the ΔG value for the coupled reaction will be negative. Due to this, the coupled reaction would be spontaneous.

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