Question Detail

CHM 101 Chemical Thermodynamics Objective Question
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Question

What happens to entropy during phase transitions like melting and boiling?
Options
A Entropy remains constant
B Entropy decreases sharply
C Entropy becomes zero
D Entropy increases sharply because heat is absorbed at constant temperature and molecules gain freedom of motion
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Melting (solid → liquid) and boiling (liquid → gas) involve vertical jumps in entropy vs. temperature plots. Heat is absorbed at constant temperature (latent heat) and molecules gain freedom of motion, so entropy increases sharply.

Hint

The notes describe these jumps.

Question Info

Course: CHM 101
Topic: Chemical Thermodynamics
Type: Objective
Difficulty: Not specified
Question 953 of 1872
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