Question

Predict which of the following reaction (s) has a positive entropy change ?

I. Ag+ (aq) + Cl– (aq) $\longrightarrow$AgCl (s)

II. NH4Cl (s) $\longrightarrow$NH3 (g) + HCl (g)

III. 2NH3 (g) $\longrightarrow$N2 (g) + 3H2 (g)

• A. I and II
• B. III
• C. II and III
• D. II

Answer 1

Answer: (C)

II and III

Answer 2

$\Delta$ng is + ve