E-49SummativeE: Carbonyl Compounds

Recognize the methyl-carbonyl group

Deduce a CH3CO- group from the alkaline iodine test and its yellow triiodomethane precipitate.

As the syllabus states it

Deduce the presence of a CH3CO – group in an aldehyde or ketone, CH3COR, from its reaction with alkaline I2(aq) to form a yellow precipitate of tri-iodomethane and an ion, RCO2 -.

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