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July 26, 2014

Homework Help: Chemistry

Posted by Anonymous on Monday, February 28, 2011 at 2:44am.

As a technician in a large pharmaceutical research firm, you need to produce 400. mL of 1.00 M potassium phosphate solution of pH = 7.18. The pKa of H2PO4- is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as a carboy of pure distilled H2O. How much 1.00 M K2HPO4 will you need to make this solution?

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