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Question: Answered & Verified by Expert
Lysine is least soluble in water in the $\mathrm{pH}$ range
ChemistryBiomoleculesAIIMSAIIMS 2006
Options:
  • A 3 to 4
  • B 5 to 6
  • C 6 to 7
  • D 8 to 9 .
Solution:
2815 Upvotes Verified Answer
The correct answer is: 8 to 9 .
Any amino acid has its lowest solubility on its isoelectronic point and the isoelectric point is the $\mathrm{pH}$ at which the amino acid carries no charge.

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