Question

In order to adjust the buffer ph to 4.20, should you add naoh or hcl to the buffer mixture?

Answer 1

To adjust the buffer pH to 4.20, you should add HCl (a strong acid) to the buffer mixture.

Step-by-step explanation:

The pH of a buffer solution can be adjusted by adding either a strong acid or a strong base, depending on the desired pH. In this case, if the buffer pH needs to be adjusted to 4.20, HCl (a strong acid) should be added to the buffer mixture. Adding HCl will increase the concentration of hydronium ions (H+) in the buffer solution and decrease the pH.