Question

After completion of reaction I and reaction II, the organic compounds in the reaction mixture are:

• A.
• B.
• C.
• D.

Answer 1

Answer: (A), (C), (D)

1 mol. is a lot of molecules. Also, the bromination under basic conditions is the haloform reaction. Although the limiting reagent is bromine (1 mol.), some portion of acetone will undergo the bromoform reaction. Stoichiometrically, you may be able to see that exactly $\frac{1}{3}$ mol. of acetone will consume 1 mol. of Bromine. It is given that the reaction goes to completion and any excess acetone remains unreacted in the reaction flask. Since the reaction goes to completion, Q is not isolated. For reaction I:


Under acidic conditions, after one alpha bromination, the bromoketone is less reactive than the parent ketone in view of further bromination. Since only one mole each of the ketone and bromine are given, we will get just the bromoketone – which will not undergo bromination further (since there is no more bromine left). Hence,