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8/31/2012. Chem 253 - Chapter 11 - Fall 2005. 2. Example H3PO4. H3PO4 = H H2PO4-Ka1 = 1.1e-2H2PO4- = H HPO42-Ka2 = 7.5e-8HPO42- = H PO43-Ka3 = 4.8e-13For H3PO4 = 3H PO43-Ka1Ka2Ka3 = Ka = 4.0e-22. 8/31/2012. Chem 253 - Chapter 11 - Fall 2005. 3. Buffer calculations invo
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