How many grams of solid KH2PO4 (MW=136 g/mol) and solid K2HPO4 (MW = 174 g/mol) would you use to prepare a 1.00 L of a 0.500 M phosphate buffer at pH = 6.8.[pKa for KH2PO4 = 7.2] What will be the pH change if you add 5.00 grams of solid KOH (MW=56.11 g/mol) to the above buffer?

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 How many grams of solid KH2PO4 (MW=136 g/mol) and solid K2HPO4 (MW = 174 g/mol) would you use to prepare a 1.00 L of a 0.500 M phosphate buffer at pH = 6.8.[pKa for KH2PO4 = 7.2]

What will be the pH change if you add 5.00 grams of solid KOH (MW=56.11 g/mol) to the above buffer?

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