Sally, TP, etc, please don't change screen names. It matters little which name you choose but using the same one helps us serve you better.
See the sally post above about cautions about using mols and not mol/L.
millimols F^- = M x L = 10
...................F^- + H^+ ==> HF
I................10.......0.............0
add......................x................
C.............10-x....-x..............+x
E.............10-x.....0................x
Plug the E line into the HH equation and solve for x in millimols HCl Convert to mL of 0.100 M to be added.
Post your work if you get stuck.
How many mL of 0.100 M HCl must be added to 100.0 mL of 0.100 M F- to prepare a buffer solution that has a pH of 3.05?
F- (aq) +H20 (l) <--------> HF (aq) +OH- (aq) Kb= 1.47*10^-11
1 answer