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Questions and Answers
Which type of solution resists change in pH following the addition of an acid or base?
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?
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?
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?
What is the dissociation constant of the carboxyl group of an amino acid referred to as?
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What does each acidic and basic amino acid contain in its side chain?
What does each acidic and basic amino acid contain in its side chain?
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Which element is represented by HA in the context of weak acids?
Which element is represented by HA in the context of weak acids?
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What is the conjugate base of a weak acid represented by A-?
What is the conjugate base of a weak acid represented by A-?
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In a buffer solution, what happens when a base is added?
In a buffer solution, what happens when a base is added?
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'Salt' or conjugate base A- is the ionized form of what?
'Salt' or conjugate base A- is the ionized form of what?
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What defines a buffer's ability to resist changes in pH?
What defines a buffer's ability to resist changes in pH?
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