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Question

Identify the hybridization of 1 - carbon atom of the carboxylic acid.

A
sp2
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B
sp3
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C
sp
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D
sp3d
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Solution

The correct option is A sp2
Steric Number = Number of atoms bonded to atom + Number of lone pairs attached to the atom.
If the steric number is 2, the atom is sp
If the steric number is 3, the atom is sp2
If the steric number is 4, the atom is sp3

For carboxylic acid, RCOOH two oxygen atoms and R group are bonded to the carbonyl carbon. There are no lone pairs attached to the carbonyl carbon.

Steric number =3 (No. of atoms bonded to carbonyl carbon) +0 (No. of lone pairs bonded to carbonyl carbon) =3

Therefore, the carbon atom is sp2 hybridized.

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