Thank you so much for that explanation! I'm not really advanced in pH/buffer questions, so it's a tad confusing, but I still appreciate your reply. So in 1) you're saying that 0.08 moles of histidine will always be the case for both when you're going up the pH and down?
and by 2) you mean that...
^Thank you so much epenguin! I appreciate your time. Let me explain my reasoning in a different way:
We're trying to find the number of moles of HCl that are required to change the pH from 11 to a pH of 3.2 (of this Histidine buffer solution).
We would still need to do two H-H equations (1st...
Homework Statement
There is 400 mL of 0.2 M histidine buffer- pH 11. Find the moles of HCl that are needed to change the pH to 3.2.
Homework Equations
pH= pKa+log[b]/[a]
The Attempt at a Solution
First, this is how you would go from acid to base (acid-->base):
1. There is 400 mL of 0.2 M...