Which of the following involve an increase in the entropy of the system?

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Which of the following involve an increase in the entropy of the system?a. melting of a solidb. sublimationc. freezing d. mixinge. separationf. boiling

Prof. Zackary Crist MD · Accepted Answer

Guessing entropy is always a tough one in thermo, but here is mine and reasoning: a. melting of a solid – increase- a melted substance has more disorder and options than a solid, hence more entropy b) sublimation -increase – because system needs energy to go from a solid state to a gas state so there is more options of order c) freezing – NO INCREASE – freezing has more order to molecules and less options of arrangement then the liquid d) mixing- increase – mixing increases the “multiplicity” of the system, which is proportional to number of ways you can recreate this state. e) separation -NO INCREASE- because multiplicity is decreased and less options of possible molecule arrangement in a separation. More order is added to system f) boiling – increase- molecules go from a liquid to a gas. The gas molecules have more disorder and possible arrangements over a liquid

Prof. Zackary Crist MD · Answer

sublimation, metling a solid, boiling en mixing. All these processes increase the number of ways the particles can be placed in the space, thus increasing entropy.

Carol Funk

Which of the following involve an increase in the entropy of the system?

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