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Aldehydes, Ketones and Carboxylic Acids — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryAldehydes, Ketones and Carboxylic Acids1 Mark
Question
Why benzoic acid is less soluble in water than acetic acid?
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Answer

Due to polar nature of the $C = O$ and $O - H$ parts of COOH group, both $CH _3 COOH$ and $C _6 H _5 COOH$ from H -bonds with water. But due to large hydrocarbon part the extent of H -bonding is much lower in benzoic acid than acetic acid and hence benzoic acid is much less soluble in water than acetic acid.

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