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Consider the following transformations: CH3COOH →[CaCO3, heat] A →[I2, NaOH] B →[NaOI] C. The molecular formula of C is

1. CH3I
2. CH3-CH3
3. ICH2-COCH3
4. CH3I

Correct answer: ICH2-COCH3

Solution

The reaction sequence involves the formation of acetone (CH3COCH3) from acetic acid (CH3COOH) via calcium acetate (A). Acetone reacts with iodine and NaOH to form iodoform (CHI3) and a carboxylate salt. The molecular formula of C is ICH2-COCH3.

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