Sample Problem 19.1
(continued)
Set up a reaction table with the new values.
initial
change
equilibrium
0.52
-
- x
0.52 - x
-
-
0.48
0
x
+ x
+ x
0.48 + x
= 2.0 x 10-5
pH = 4.70
___________________________________________________________
Note that this buffer resists changes in pH from
additions of either strong acid or strong base!
(What is the solution pH of 0.020 M HCl or 0.020 M NaOH?)
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