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Predict which of the following reaction(...

Predict which of the following reaction(s) has a positive entropy change?
I. `Ag^(+)(aq)+Cl^(-)(aq)rarrAgCl(s)`
II. `NH_(4)Cl(s) rarrNH_(3)(g) +HCl(g)`
III. `2NH_(3)(g) rarr N_(2)(g)+3H_(2)(g)`

A

I and II

B

III

C

II and III

D

II

Text Solution

Verified by Experts

The correct Answer is:
C
In I part, entropy is decreasing as solid is formed
In II and III, entropy is increasing as gaseous moles re increasing
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