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AP Chemistry/Unit 9: Applications of Thermodynamics
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Standard Entropy Change of Condensation

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If a reaction converts 1 mole of a substance from the gaseous phase to the liquid phase, what is the sign of the entropy change ΔS\Delta S^\circ for the process?

Phase Typical SS^\circ (J/(mol*K))
Gas 210
Liquid 70
A

Positive

B

Cannot be determined

C

Zero

D

Negative

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