Question

question 4
5 pts
a solution has a ph of 4 before a buffer is added. the ph will select after the buffer is added.
select
increase
decrease
remain the same

Explanation:

Buffers are solutions that resist changes in pH when small amounts of acid or base are added. However, if the original solution is acidic (pH 4) and a buffer is added, the buffer's role is to stabilize the pH. But typically, if the buffer is appropriate (e.g., an acidic buffer for an acidic solution), the pH should remain relatively stable, or if the buffer has a slightly different pH, but the key property of a buffer is to resist large changes. But in the context of this question, the most appropriate answer is that the pH will remain the same (or change very slightly, but among the options, "remain the same" is the best fit as buffers resist pH changes).

Answer:

remain the same