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When 10.00 ml of NH3 solution is titrated with 0.015 M Hbr, 27.5ml of the acid...

When 10.00 ml of NH3 solution is titrated with 0.015 M Hbr, 27.5ml of the acid is needed to reach the equivalence point. what is the concentration of the ammonia? what is the pH when 10.00mL 0.015 M HBr has been added and what is the equivalence point pH?

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