Select the statement(s) that correctly describe buffers. Select all that apply.多项选择题

A

A strong acid added to the buffer solution reacts with the weak acid of the buffer.

B

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

C

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

D

A buffer is made up of a weak acid and its conjugate base or a weak base and its conjugate acid.

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