A buffer is a chemical that A. is identical to baking soda. B. Both the first and second answer choices are correct. C. can quickly absorb excess H+ ions to keep a solution from becoming too acidic. D. can quickly release H+ ions to counteract any increases in the OH– concentration in a solution. E. restores the pH of a solution to 7.0.

A) can quickly absorb excess H+ ions to keep a solution from becoming too acidic.

B) can quickly release H+ ions to counteract any increases in the OH- concentration in a solution.

Explanation:

A buffer solution (also, pH buffer) is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Its pH changes very little when a small amount of strong acid or base is added to it. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of applications.