In: Chemistry
Design a buffer that has a pH of 8.25 using one
of the weak base/conjugate acid systems shown below.
Weak Base | Kb | Conjugate Acid | Ka | pKa |
---|---|---|---|---|
CH3NH2 |
4.2×10-4 |
CH3NH3+ |
2.4×10-11 |
10.62 |
C6H15O3N |
5.9×10-7 |
C6H15O3NH+ |
1.7×10-8 |
7.77 |
C5H5N |
1.5×10-9 |
C5H5NH+ |
6.7×10-6 |
5.17 |
How many grams of the chloride salt of the
conjugate acid must be combined with how many grams of the weak
base, to produce 1.00 L of a buffer that is
1.00 M in the weak base?
grams chloride salt of conjugate acid =
grams weak base =