When a 16.0 mL sample of a 0.378 M aqueous hypochlorous acid solution is titrated with...
When a 16.0 mL sample of a
0.378 M aqueous hypochlorous acid
solution is titrated with a 0.357 M aqueous
barium hydroxide solution, what is the pH at the
midpoint in the titration?
Homework Answers
pKa of HOCl = 7.53
HOCl is weak acid and Ba(OH)2 is strong base.
at the mid point,
[HOCl] = [OCl-]
Using Henderson equation,
pH = pKa + log [salt] / [acid]
or
pH = 7.53 + log (1)
or
pH = 7.53 (answer)
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