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NTA Abhyas NEET2020ChemistryBiomoleculesPractice

The incorrect structure of glycine at given pH are

Options

  1. AH 3 N ⊕ C H 2 - C | | O - O H at pH = 2.0
  2. BH 3 N ⊕ C H 2 - C | | O - O - at pH = 6.0
  3. CH 2 N C H 2 - C | | O - O - at pH = 9
  4. DH 2 N C H 2 - C | | O - O H at pH = 12

Correct answer

D. H 2 N C H 2 - C | | O - O H at pH = 12

Step-by-step solution

At acidic pH, glycine will convert to cation and at basic pH gylcine will convert to anion.

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