Problem: Select the statements that correctly describe buffers. a) The pH of a buffer solution does not change significantly when any amount of a strong acid is added. b) An acid added to the buffer solution reacts with the weak base of the buffer. c) The pH of a buffer solution is determined by the ratio of the concentration of conjugate base to the concentration of strong acid. d) A buffer is generally made up of a weak acid and its conjugate base. e) The Ka of a buffer does not change when any amount of an acid is added to the buffer solution.

FREE Expert Solution

Recall that a buffer can be composed of the following:

weak base and its conjugate acid
weak acid and its conjugate base
weak acid and a strong base 

▪ concentration of weak acid > concentration of strong base

weak base and a strong acid 

concentration of weak base > concentration of strong acid

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Problem Details

Select the statements that correctly describe buffers. 

a) The pH of a buffer solution does not change significantly when any amount of a strong acid is added. 

b) An acid added to the buffer solution reacts with the weak base of the buffer. 

c) The pH of a buffer solution is determined by the ratio of the concentration of conjugate base to the concentration of strong acid. 

d) A buffer is generally made up of a weak acid and its conjugate base. 

e) The Ka of a buffer does not change when any amount of an acid is added to the buffer solution.

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