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What volume of 0.175 M solution of KOH is needed to titrate 30.0 mL of 0.200...

What volume of 0.175 M solution of KOH is needed to titrate 30.0 mL of 0.200 M H2SO4?

If 79.5 mL of an aqueous solution of perchloric acid is needed to neutralize 50.0 mL of a 0.0750 M aqueous solution of barium hydroxide in a titration, what is the pH of the original perchloric acid solution solution?

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