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I am doing triprotic acid titrations.

I have an imaginary acid (H3A) 10mL with the concentration 0.760M and we are titrating a NaOH with the concentration of 0.320M.

I have to find the amount of NaOH in mol and mL for

1. first half-equivalence point

2.first equivalence point

3. second-half equivalence point

4.second equivalence point

5. third half-equivalence point and

6. third equivalence point.


and then I have to find the pH for each of these points.