Useful information: Tris hyrochloride fw = 157.596 g/ml
The Kb for tris is 1.2 x 10^-6
You can represent tris hydrochloride as BH+ and its conjugate base, tris, as B.
10.0 g of trisHCl = 0.06345 moles
Kb = [OH-] x (BH+/B) is the equation I will use for a buffer based on a base (tris)
Now we sub in all our known values.
Kb we knoe 1.2 x ...
It shows how to find the volume of NaOH added during titration process.