Which of the following is most soluble in water?

#CH_3CH_2CH_2CH_2CH_2OH#
#CH_3CH_2CH_2COOH#
#CH_3CH_2CH_2CH_2NH_2#

#CH_3CH_2CH_2CH_2CH_2OH#
#CH_3CH_2CH_2COOH#
#CH_3CH_2CH_2CH_2NH_2#

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anor277 Share
May 27, 2016

Answer:

All the molecules contain a polar group. However, the molecule that should be most soluble in water is propanoic acid. Why?

Explanation:

Butanoic acid has the shortest pendant alkyl chain. For this sole reason we would predict that it should give greater aqueous solubility. This is a prediction.

As a physical scientist, you should look up the literature to see if this prediction is true.

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