Henderson Hasselbalch

Henderson Hasselbalch

University

15 Qs

quiz-placeholder

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Henderson Hasselbalch

Henderson Hasselbalch

Assessment

Quiz

Science

University

Hard

Created by

Lisa Thompson

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the Henderson-Hasselbalch equation, what does "p" represent?

The power of the concentration

The negative logarithm

The pressure of the system

The product of the concentrations

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If you know the pH and pK_a of a solution, what can you determine?

The temperature of the solution

The ratio of [A-] to [HA]

The molecular weight of the solute

The viscosity of the solution

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the pH is one unit above the pKa of an amino acid group, approximately what percentage of the amino acid exists in the deprotonated [A-] form?

50%

91%

99%

99.9%

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the pH is 2 units below the pKa of an amino acid group, approximately what percentage of the group is in the protonated [HA] form?

91%

99%

50%

99.9%

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens to the ratio of [A-] to [HA] when the pH is equal to the pKa of the amino acid group?

[A-]/[HA] = 10

[A-]/[HA] = 100

[A-]/[HA] = 1

[A-]/[HA] = 0

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the ratio of [A-] to [HA] if the pH is two units above the pKa of the amino acid group?

[A-]/[HA] = 1

[A-]/[HA] = 10

[A-]/[HA] = 100

[A-]/[HA] = 1000

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

At a pH three units above the pKa, what is the approximate percentage of the amino acid in the [A-] form?

50%

91%

99%

99.9%

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