In which of the following conditions does the entropy of a system increase? (202

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Question: In which of the following conditions does the entropy of a system increase? (2022)

Options:

Correct Answer: When a solid melts

Exam Year: 2022

Solution:

The entropy of a system increases when a solid melts into a liquid, as the disorder of the system increases.

In which of the following conditions does the entropy of a system increase? (2022)

In which of the following conditions does the entropy of a system increase? (2022)

Step 1: Understand what entropy means. Entropy is a measure of disorder or randomness in a system.
Step 2: Recognize that solids have a more ordered structure compared to liquids.
Step 3: When a solid melts, it changes from a structured form to a more disordered form (liquid).
Step 4: Realize that this change from solid to liquid increases the disorder of the system.
Step 5: Conclude that when a solid melts into a liquid, the entropy of the system increases.

Entropy – Entropy is a measure of the disorder or randomness in a system, and it tends to increase in processes that involve a transition from a more ordered state (solid) to a less ordered state (liquid).
Phase Changes – Phase changes, such as melting, boiling, and sublimation, typically result in an increase in entropy due to the increase in molecular freedom and disorder.