Which of the following carboxylic acids is highly insoluble in water?

Propanoic acid

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Butanoic acid

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Pentanoic acid

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Decanoic acid

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Solution

The correct option is D Decanoic acid
Higher carboxylic acids are insoluble in water due to the increased hydrophobic interaction of the hydrocarbon part.

Thus, decanoic acid is highly insoluble in water, as it contains longer hydrocarbon chain.

Option D is correct.

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Similar questions

QUESTION 2.25(i)

Among the following compounds, identify which are insoluble, partially soluble and highly soluble in water?

(i) Phenol

(ii) Toluene

(iii) Formic acid

(iv) Ethylene glycol

(v) Chloroform

(vi) Pentanol

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