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As a technician in a large pharmaceutical research firm, you need to produce 400. mL of 1.00 M potassium phosphate buffer solution of pH = 7.05. 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?

Question

As a technician in a large pharmaceutical research firm, you need to produce 400. mL of 1.00 M potassium phosphate buffer solution of pH = 7.05. 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?

check_circleAnswer

Buffer is defined as a solution which resists any change in its pH by the addition of small amounts of acids or bases to it. Buffer solution consists of both acidic as well as basic component.

As a technician in a pharmaceutical firm, we have t...

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