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Consider the titration of 80.0 mL of 0.100 M Ba(OH)2 by 0.400 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added.
a. 0.0 mL
b. 20.0 mL
c. 30.0 mL
d. 40.0 mL
e. 80.0 mL
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