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Assertion A : Enol form of acetone CH 3 COCH 3 exists in < 0 . 1 % quantity. However, the enol form of acetyl acetone CH 3 COCH 2 OCCH 3 exists in approximately 15 % quantity. Reason R : enol form of acetyl acetone is stabilized by intramolecular hydrogen bonding, which is not possible in enol form of acetone. Choose the correct statement:

Options

  1. AA is false but R is true
  2. BBoth A and R are true and R is the correct explanation of A
  3. CBoth A and R are true but R is not the correct explanation of A
  4. DA is true but R is false

Correct answer

B. Both A and R are true and R is the correct explanation of A

Step-by-step solution

Acetyl acetone in enol form have intramolecular H-bonding, which is absent in acetone. enol form of Acetyl acetone is stabilised by conjugation and by intramolecular H-bonding. enol form of acetone is very less < 0 . 1 %

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