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Q.
Which of the following condition is not favourable for the feasibility of a reaction ?
Thermodynamics
Solution:
For a reaction to be feasible; its free energy must be negative ;
$ΔG = ΔH - TΔS = -ve$
In all three cases $(a, b, c), ΔG$ is negative but in option $(d)$, $ΔG$ is positive which is not favourable for the feasibility of the reaction.