JEE Main Chemistry question
A decapeptide (mol. wt. 796) on complete hydrolysis gives glycine (mol. wt. 75), alanine and phenylalanine. Glycine contributes 47% to the total weight of the hydrolysed products. The number of glycine units present in the decapeptide is
Answer: (D)
Solution
A decapeptide (10 amino acid residues) has 9 peptide (amide) bonds, so complete hydrolysis adds 9 water molecules: total mass of hydrolysis products . Glycine
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