Explain an unknown acid is a diprotic acid can donate 2 proton. 0.954g of the unknown acid is titrated with 0.509M NaOH.
H2A (aq) + 2NaOH (aq)->2H20(l)+Na2A(aq)
34.04ml of base is required to reach the second equivalence point. State the molar mass of the acid.