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20.00 mL of 0.11 M HNO3 is titrated with 0.25 M NaOH.  What volume of...

20.00 mL of 0.11 M HNO3 is titrated with 0.25 M NaOH.  What volume of base is required to reach the equivalence point?
Calculate pH at each of the following points in the titration.

a) 4.40 mL
 b) 8.80 mL
 c) 12.00 mL

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