Q.

A fatty acid has a carboxyl group attached to an R group. The R group could be a methyl (–CH3 ), or ethyl  (–C2 H5 ) or a higher number of –CH2 groups (1 carbon to 19 carbons). What is the general formula of a simple fatty acid?

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a

  CH3(CH2)nCOOH

b

CH2(CH2)nCOOH

c

CH2(CH4)nCOOH

d

CH4(CH4)nCOOH

answer is D.

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Detailed Solution

Fatty acids are organic compounds of long chains of hydrogen and carbon attached to a carboxylic group. Their general formula is CH3(CH2)nCOOH.

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A fatty acid has a carboxyl group attached to an R group. The R group could be a methyl (–CH3 ), or ethyl  (–C2 H5 ) or a higher number of –CH2 groups (1 carbon to 19 carbons). What is the general formula of a simple fatty acid?