Question

Identify the reaction/process in which the entropy increases.

• A. \( \text{H (g)} + \text{H (g)} \rightarrow \text{H}_2 \text{(g)} \)
• B. \( \text{H}_2\text{O (g)} \rightarrow \text{H}_2\text{O (s)} \)
• C. \( \text{H}_2\text{O (l)} \rightarrow \text{H}_2\text{O (g)} \)
• D. \( \text{A (g)} + \text{B (g)} + \text{C (s)} \rightarrow 2\text{D (s)} \)

Hint:

Gas \(>\) Liquid \(>\) Solid in terms of entropy (disorder).

Answer 1

The Correct Option is C

Entropy increases when a substance changes from a more ordered phase (liquid) to a more disordered phase (gas).
Liquid water converting to water vapor involves an increase in randomness and entropy.