Calculate the pH of buffers based on the recipe/; 17.91 g Na2HPO4*12H2O 11.7 mL 1M NaOH...

Question

Question

Calculate the pH of buffers based on the recipe/;

17.91 g Na2HPO4*12H2O

11.7 mL 1M NaOH

988.3mL H2O

---------------------

Compound

MW

pK_a if ionic strength =0

Na₂HPO₄*12H₂O

358.14 g/mol

2.148, 7.198, 12.375

Answer 1

Answer #1

One mole of Na,HPO4-12H2O gives one mole HPO One mole HPOreacts with one mole NaOH gives one mole Po Reaction HPO: + NaOH → I

Answer 2

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