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Question

On a humid day, water vapor condenses on a cold surface. During condensation, the entropy of the water :

A
increases
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B
decreases
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C
remains constant
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D
decrease or remains constant
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Solution

The correct option is A decreases

Entropy is the measure of disorder or randomness of a system. Liquids are more ordered than gases, therefore, when steam condenses the entropy (disorder) of the system decreases.


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