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Titration of 0.394g of sulfamic acid takes 20.0mL of 0.100 M NaOH to reach equivalence. What is the MW of sulfamic a.?

(22) A diprotic acid, H2A, has pKs 8.4 and 3.5. 50.0 mL of 0.10M of the diprotic acid, H2A, is titrated with 0.20 M NaOH. What is the Ve (i.e. the first equivalence point)?

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