Q.

In which case change in entropy is negative?

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By Expert Faculty of Sri Chaitanya

a

2H(g)⟶H2(g)

b

Evaporation of water

c

Expansion of a gas at constant temperature

d

Sublimation of solid to gas

answer is 1.

(Detailed Solution Below)

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Detailed Solution

If Δng<0 then ΔS<0
ctaimg
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