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Consider the graph of Gibbs free energy G vs Extent of reaction. The number of statement/s from the following which are true with respect to points (a), (b) and (c) is_______
A . Reaction is spontaneous at (a) and (b)
B. Reaction is at equilibrium at point (b) and non-spontaneous at point (c)
C. Reaction is spontaneous at (a) and non-spontaneous at (c)
D. Reaction is non – spontaneous at (a) and (b)

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answer is 2.

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Detailed Solution

At a graph is decreasing ie Gibbs energy is decreasing $\Rightarrow ΔG < 0$
$∴$ Spontaneous at A
At b, equilibrium is attained
At c, graph is increasing
$\Rightarrow ΔG > 0$
$∴$ Non spontaneous at C.

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