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To make a buffer you will need to mix a solution of a weak base with a weak acid. We will be making a phosphate buffer by combining a phosphate base K2HPO4 (dibasic monohydrogen phosphate) with a phosphate acid KH2PO4 (monobasic dihydrogen phosphate). Equal amounts of each should provide a solution with a pH of 6.8.

Determine the mass of 1 mole of each of the phosphate salts
​1 mole of K2HPO4

​1 mole of KH2PO4

To make a 0.1 M solution of K2HPO4 how much salt should you add in a 100 ml solution?

To make a 0.1 M solution of KH2PO4 how much salt should you add in a 100 ml solution?

Sagot :

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