3. How many grams of Na,HPO, must be added to a solution of 500 mL of 0.25 M NaH,PO, in prder to make a buffer with a pH = 7? (for H3PO4, pKa1 =2.41 pKa2 = 7.20 pK3 = 12.37)

Chemistry: Principles and Reactions
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ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
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Chapter15: Complex Ion And Precipitation Equilibria
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Problem 26QAP: At 25C, 10.24 mg of Cr(OH)2 are dissolved in enough water to make 125 mL of solution. When...
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3. How many grams of Na,HPO, must be added to a solution of 500 mL of 0.25 M NaH,PO, in
order to make a buffer with a pH = 7? (for H,PO4, pKa1 =2.41 pKa2 = 7.20 pKa3 = 12.37)
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Transcribed Image Text:3. How many grams of Na,HPO, must be added to a solution of 500 mL of 0.25 M NaH,PO, in order to make a buffer with a pH = 7? (for H,PO4, pKa1 =2.41 pKa2 = 7.20 pKa3 = 12.37) %D %3D
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