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5a. What is the pH at the equivalence point in the titration of 50.00 mL of...

5a. What is the pH at the equivalence point in the titration of 50.00 mL of 0.400 M B (a generic base with Kb = (5.00x10^-10))with 0.200 M HNO3?

5b. What is the pH at 110.00 mL of titrant in the titration of 50.00 mL of 0.400 M B (a generic base with Kb = (7.18x10^-9))with 0.200 M HNO3?

Please help, will rate

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