Calculate the pH of buffers based on the recipes A: 17.91g Na2HPO4*12H2O 1.7mL 1M NaOH 998.3mL...

Calculate the pH of buffers based on the recipes

A: 17.91g Na₂HPO₄*12H₂O

1.7mL 1M NaOH

998.3mL H₂O

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B: 13.16g citric acid monohydrate

25mL 1M NaOH

998.3mL H₂O

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C: 0.49g NaH₂PO₄*H₂O

12.49g Na₂HPO₄*12H₂O

1L H₂O

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D: 17.91g NaH₂PO₄*12H₂O

1L H₂O

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Compound	MW	pK_a if ionic strength =0
Citric acid monohydrate	210.14 g/mol	3.128, 4.761, 6.396
Na₂HPO₄*12H₂O	358.14 g/mol	2.148, 7.198, 12.375
Na₂HPO₄*H₂O	137.99 g/mol	2.148, 7.198, 12.375

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queen_honey_blossom answered 1 year ago

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