JEE Main 2025 Chemistry question
CH(CH) attached to HN-CH-COOH, at pH = 2 gives A, at pH = 10 gives B.
Choose the correct option for structures of A and B, respectively
Answer: (4)
Solution
At pH=2 (acidic), -NH2 converts to -NH3+ giving A = H3N+-CH-COOH. At pH=10 (basic), -COOH converts to -COO⁻ giving B = H2N-CH-COO⁻.