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Determine the pH during the titration of 11.9 mL of 0.135 M hydroiodic acid by 5.18×10-2...

Determine the pH during the titration of 11.9 mL of 0.135 M hydroiodic acid by 5.18×10-2 M barium hydroxide at the following points:

(1) Before the addition of any barium hydroxide

(2) After the addition of 7.75 mL of barium hydroxide

(3) At the equivalence point

(4) After adding 18.8 mL of barium hydroxide

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