Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

The process with negative entropy change is :

  1. A

    Sublimation of dry ice

  2. B

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

  3. C

    Synthesis of ammonia from N2 and H2 

  4. D

    Dissolution of iodine in water 

Solution

N2(g) + 3H2(g) 2NH3(g)

Number of gaseous moles are decreasing

Change in entropy will be negative.

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