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As a technician in a large pharmaceutical research firm, you need to produce 450. mL of...

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Chemistry

As a technician in a large pharmaceutical research firm, youneed to produce 450. mL of a potassium dihydrogen phosphate buffersolution of pH = 6.91. The pKa of H2PO4− is 7.21. You have thefollowing supplies: 2.00 L of 1.00 M KH2PO4 stock solution, 1.50 Lof 1.00 M K2HPO4 stock solution, and a carboy of pure distilledH2O. How much 1.00 M KH2PO4 will you need to make this solution?(Assume additive volumes.)

Answer & Explanation Solved by verified expert
3.7 Ratings (352 Votes)
Sol The pH of a buffer can be calculated using Henderson equation which is given below pH pKa log Base Acid Here pH is given as 691 pKa is 721 Acid is KH2PO4 and    See Answer
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