Which of the following is true about buffers? (Circle all that apply.) a. The co

ID: 1018798 • Letter: W

Question

Which of the following is true about buffers? (Circle all that apply.)

a. The concentration of a buffer refers to the number of moles of the acid species per liter of solution.

b. Either molarity or number of moles can be used in the Henderson-Hasselbach equation for calculating pH of buffers.

c. Buffers are any solution that contains both an acid and a base.

d. The pKa is a constant value associated with the base component of the buffer system.

e. The primary function of buffers is to resist changes in pH.

b,d and e are the correct answers.

To be a buffer not acid and base should be present,but acid or base and there salt must be present.

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