NTA Abhyas NEET2020ChemistryBiomoleculesPractice
the acidic group in aqueous solution of glycine is
Options
- A- C O O H
- B- C O O -
- C- N H 2
- D− NH 3 +
Correct answer
D. − NH 3 +
Step-by-step solution
In aqueous solution, the α -amino acids form mostly Zwitter ions. N H 2 C H 2 C O O H ⇌ H 3 N + - C H 2 - C O O - If a base is added, H + ion is furnished by - N + H 3 . Hence, the acidic group is - N + H 3 .