Sample Problem 19.1
(continued)
Set up a reaction table with the new values.
initial
change
equilibrium
0.48
-
- x
0.48 - x
-
-
0.52
0
x
+ x
+ x
0.52 + x
= 1.7 x 10-5
pH = 4.77
before addition
addition
after addition
= 0.020 M H3O+
0.50
-
0.50
-
-
-
-
0.020
-
0.48
0
0.52
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