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Part A: As a technician in a large pharmaceutical research firm, you need to pro

ID: 747688 • Letter: P

Question

Part A: As a technician in a large pharmaceutical research firm, you need to produce 350 mL of 1.00 M potassium phosphate buffer solution of pH = 7.20. 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? Part B: If the normal physiological concentration of HCO3 is 24 mM, what is the pH of blood if Pco2 drops to 24.0 mmHg?

Explanation / Answer

part A 84.4