diprotic titrations

[podyon18]

Titration with strong acid and strong base - Equiv pt. @ 7
bet. Strong base and weak acid - Equiv pt. >7
bet. weak base and Strong acid Equiv pt. <7

What about a tritration bet. a srong diprotic acid (H2SO4) and a strong base (NaOH) for example.

Would the first eqivalence pt. still be at 7 or being that there is still acidic Hso4- would it be lower then 7?

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[ikjadoon]

Well, you're right in that it will be lower. The pH after 1 molar equivalent of NaOH is the pH of a weak acid (HSO4-).

Give this a read: http://www.microlabinfo.com/Experim...2.H2SO4.Titrtn.PDFs/11.8.Ka2.H2SO4.Titrtn.pdf