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For a 0.1 M aqueous solution of lysine, the pH at which it carries no net charge is ___________. (pKa values for: α-carboxylic group = 3.1, α-amino group = 8.0, ε-amino group = 10.8)
    Correct answer is between '9.4,9.4'. Can you explain this answer?
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    For a 0.1 M aqueous solution of lysine, the pH at which it carries no ...
    The pKa values for lysine are as follows:
    - α-COOH: pKa = 2.16
    - α-NH3+: pKa = 8.95
    - ε-NH3+: pKa = 10.53

    When the α-COOH group is protonated, it carries a +1 charge, and when the α-NH3+ and ε-NH3+ groups are protonated, they each carry a +1 charge. Therefore, at pH values lower than the pKa of α-COOH (2.16), lysine will carry a net positive charge.

    When the α-COOH group is deprotonated (pH > 2.16), it carries no charge. However, the α-NH3+ and ε-NH3+ groups still carry a +1 charge. Therefore, at pH values higher than the pKa of α-COOH but lower than the pKa of α-NH3+ (8.95), lysine will carry a net positive charge.

    When both the α-COOH and α-NH3+ groups are deprotonated (pH > 8.95), lysine carries no net charge. Therefore, the pH at which lysine carries no net charge is approximately 8.95.
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    For a 0.1 M aqueous solution of lysine, the pH at which it carries no net charge is ___________. (pKa values for: α-carboxylic group = 3.1, α-amino group = 8.0, ε-amino group = 10.8)Correct answer is between '9.4,9.4'. Can you explain this answer?
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    For a 0.1 M aqueous solution of lysine, the pH at which it carries no net charge is ___________. (pKa values for: α-carboxylic group = 3.1, α-amino group = 8.0, ε-amino group = 10.8)Correct answer is between '9.4,9.4'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about For a 0.1 M aqueous solution of lysine, the pH at which it carries no net charge is ___________. (pKa values for: α-carboxylic group = 3.1, α-amino group = 8.0, ε-amino group = 10.8)Correct answer is between '9.4,9.4'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a 0.1 M aqueous solution of lysine, the pH at which it carries no net charge is ___________. (pKa values for: α-carboxylic group = 3.1, α-amino group = 8.0, ε-amino group = 10.8)Correct answer is between '9.4,9.4'. Can you explain this answer?.
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