Amino Acid Isoelectric Point Calculation
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Questions and Answers

Which type of solution resists change in pH following the addition of an acid or base?

  • Salt solution
  • Acidic solution
  • Buffer solution (correct)
  • Conjugate base solution

    • What is the maximum buffering capacity of a buffer at?

  • pKa ± 1
  • pH equal to 7
  • pH equal to Ka
  • pH equal to pKa (correct)

    • What happens to the pH of a solution when the amounts of HA and A- in a buffer are equal?

  • pH equals K1
  • pH equals Ka
  • pH equals pKa (correct)
  • pH equals 7

    • What is the dissociation constant of the carboxyl group of an amino acid referred to as?

    <p>$K_1$ (C)</p> Signup and view all the answers

    What does each acidic and basic amino acid contain in its side chain?

    <p>An ionizable group (A)</p> Signup and view all the answers

    Which element is represented by HA in the context of weak acids?

    <p>Hydrogen (C)</p> Signup and view all the answers

    What is the conjugate base of a weak acid represented by A-?

    <p>$HA^-$ (C)</p> Signup and view all the answers

    In a buffer solution, what happens when a base is added?

    <p>$pH$ remains constant (A)</p> Signup and view all the answers

    'Salt' or conjugate base A- is the ionized form of what?

    <p>$HA$ (B)</p> Signup and view all the answers

    What defines a buffer's ability to resist changes in pH?

    <p>Conjugate acid concentration (A)</p> Signup and view all the answers

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