First slide

2nd Law of Thermodynaimcs

Question

Which one of the following reaction involves in decrease of entropy

Easy

A

Sublimation of dry ice
B

Crystallisation of salt from brine solution
C

Combustion of carbon
D

Decomposition of gaseous dinitrogen tetraoxide

Solution

Order of Entropy:
gas > liquid > solid
In the process of Crystallization , liquid $\to$ solid, decrease in entropy is observed

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