Q23 / 160 · AP EAMCET 2020 (21 Sep Shift 2) · Chemistry

Among the following processes, for which process, the change in entropy \((\Delta S)\) is negative?

A
Sublimation of iodine
Correct answer
B
Freezing of water
C
Burning of rocket fuel
D
Dissolution of sugar

Solution

When water freezes its entropy decreases. A negative change in entropy indicates that the disorder of an isolated system has decreased. When liquid water freezes into ice represents an isolated decrease in entropy because liquid particles are more disordered than solid particles. Hence, option (b) is correct.

Hence, the correct answer is option: 'B'.

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