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Acetic acid. While all are soluble in water, the longer chains in pentanoic and octanoic acid create significant dispersion interactions, decreasing their solubility in water compared to the smaller acetic acid molecule.

Source: college chemistry student.

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11y ago
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12y ago

butanoic acid is more water soluble than butane because it contains a hydroxyl group.

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Q: Which is the most water soluble butane or butanoic acid?
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