Consider the titration of 50.00 mL of a 0.1000 M solution of a weak acid, HA,...
Consider the titration of 50.00 mL of a 0.1000 M solution of a weak acid, HA, with a 0.0900 M solution of the strong base KOH as the titrant. Determine the pH at the equivalence point of this titration. The acid dissociation constant for the acid HA is Ka = 1.78 x 10-4.
a. 9.01
b. 8.21
c. 5.79
d. 5.07
Homework Answers
At equivalent point,
50×0.10 = V × 0.090
V= 55.55 mL
C = 0.04760 M
pH = 1/2(14+3.75 +log(0.0476))
=8.21
(b) is correct
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