Question

A ____________ is a chemical solution that keeps ph within normal limits by absorbing excess hydrogen, or h+, ions and hydroxide, or oh-, ions.

Answer 1

its a buffer solution

Answer 2

Buffer.

Step-by-step explanation:

A buffer solution is a solution made out of a weak acid/base and its conjulgated base/acid. This kind of solution is special because it is resistent so pH change because it can react with acids and with bases, thus it keep pH withing a determined range as long as it is not fully consumed by excess adition of acid/base.