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Answer :

Answer:

b

Explanation:

a p e x :)

The an ester functional group is given in the picture.

What is an ester?

  • When carboxylic acid and alcohol react together in the presence of acid or alkaline then it form ester.
  • An organic compound (ester)react with water to form carboxylic acid and alcohol.
  • The ester group contain [tex]-COOR[/tex] .
  • Example: [tex]RCOOR[/tex]

Where R = Alkyl group.

What is functional group?

  • A substituent ( group of atoms ) in a molecule that responsible for characteristic chemical reaction of the molecules.

learn about ester here.

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