MolSynapsequestion bank

MolSynapse / Question bank / Aldehydes, Ketones and Carboxylic Acids / Carboxylic acids: acidity, preparation, derivatives, HVZ reaction

NEET levelSingle correct optionDifficulty 1 of 3co176

Ethanamide is heated with phosphorus pentoxide, $P X_{2} O X_{5}$ . The organic product is

A $CH X_{3} CH X_{2} NH X_{2}$
B $CH X_{3} COOH$
C $CH X_{3} CN$
D $CH X_{3} NH X_{2}$

Answer: C

P X_{2} O X_{5}

is a dehydrating agent. It removes one molecule of water from a primary amide:

CH X_{3} CONH X_{2} CH X_{3} C \equiv N + H X_{2} O

, giving ethanenitrile.

Practice Aldehydes, Ketones and Carboxylic Acids More on Carboxylic acids: acidity, preparation, derivatives, HVZ reaction

Previous questionNext question

More questions on Carboxylic acids: acidity, preparation, derivatives, HVZ reaction