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Which of the following aliphatic carboxylic acids is a solid at room temperature?

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in Chemistry – Class 12 by (188k points)
Which of the following aliphatic carboxylic acids is a solid at room temperature?

(a) Heptanoic acid

(b) Octanoic acid

(c) Nonanoic acid

(d) Decanoic acid

I have been asked this question by my school teacher while I was bunking the class.

Query is from Carboxylic Acids Physical Properties in portion Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

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Best answer
Correct option is (d) Decanoic acid

To explain: The members butanoic acid to nonanoic acid are colourless oily liquids at room temperature. The compounds with ten or more carbon atoms exists as waxy solids at room temperature.

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