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Topic 9.6 · Free Energy of Dissolution

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AP Chemistry · Topic 9.6: Free Energy of DissolutionOpen topic

Original PrepAtlas question. This is not an official College Board question.

A salt dissolves readily while the insulated solution becomes cooler. How can dissolution still be thermodynamically favorable under the conditions?

AEvery favorable dissolution must release heatBCooling proves no ions entered solutionCThe salt must have a negative absolute entropyDA favorable entropy contribution can outweigh the positive enthalpy change.

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Topic 9.6 · Free Energy of Dissolution

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