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The process with negative entropy change is

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The process with negative entropy change is 

(1) Dissociation of CaSO4(s) to CaO(s) and SO3(g) 

(2) Dissolution of iodine in water 

(3) Synthesis of ammonia from N2 and H2 

(4) Sublimation of dry ice

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Best answer

The correct option is (3) Synthesis of ammonia from N2 and H2.

Explanation:

where Δng > O

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