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How many carbons are there in the product of a decarboxylation reaction when compared with the reactant?

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in Chemistry – Class 11 by (148k points)
How many carbons are there in the product of a decarboxylation reaction when compared with the reactant?

(a) two carbons more

(b) one carbon more

(c) one carbon less

(d) an equal number of carbons

This question was addressed to me by my college director while I was bunking the class.

Enquiry is from Hydrocarbons in portion Hydrocarbons of Chemistry – Class 11

1 Answer

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Correct answer is (c) one carbon less

To explain I would say: Decarboxylation of sodium or potassium salt of fatty acids is decarboxylation reaction. This reaction is used for descending of series as the alkane obtained has one carbon less than the parent compound. Here quicklime is used as it is more hygroscopic than sodium hydroxide and keeps Sodium Hydroxide in a dry state.

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