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Titration: Sulfuric Acid

You are going to titrate sulfurous acid, H2SO3 (Ka1 = 1.7x 10minus 2 and Ka2 = 6.4 x 10 minus 8) with a 0.2000 M NaOH solution. If you start with 100 ml of 0.1275 M sulfurous acid, what is the initial pH? What is the pH of the solution at the first equivalence point? What is the pH at the second equivalence point? What is the total volume of the solution at the end of the titration?

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