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Question

Which of the following quantity decreases when a gas condenses into a liquid?

A
Standard voltaic potential
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B
Entropy
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C
Enthalpy
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D
Reaction rate
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E
Gibbs free energy
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Solution

The correct option is A Entropy
Entropy: Entropy is the measure of the randomness (disorderedness).
Lesser the freedom lesser the Entropy.
Hence, entropy decrease when state changes from gas to liquid and liquid to solid.

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