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JEE Advanced levelSingle correct optionDifficulty 3 of 3el135

Complete hydrolysis of one mole of aspartame in acid consumes how many moles of water, and what are the products?

A1 mol; aspartic acid and phenylalanine methyl ester
B2 mol; aspartic acid, phenylalanine and ethanol
C2 mol; aspartic acid, phenylalanine and methanol
D3 mol; aspartic acid, phenylalanine and methanol

Answer: C

Aspartame contains one amide bond and one ester bond, each cleaved by one

H X_{2} O

.

C X_{14} H X_{18} N X_{2} O X_{5} + 2 H X_{2} O - > C X_{4} H X_{7} NO X_{4} + C X_{9} H X_{11} NO X_{2} + CH X_{3} OH

balances (C 14, H 22, N 2, O 7). Hence 2 mol of water are used.

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