Question- As a technician in a large pharmaceutical research firm, you need to produce 200.mL of 1.00 M potassium phosphate buffer solution of pH = 6.94. The pKa of H2PO4 is 7.21. You have the following supplies: 2.00 L of 1.00 M KH2PO4 stock solution, 1.50 L of 1.00 M K2HPO4 stock solution, and a carboy of pure distilled H2O. How much 1.00 M KH2PO4 will you need to make this solution?
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