You want to make a 500.0 mL of 0.0500 M of phosphate buffer pH = 6.80 from solid Na,HPO, compound and a 0.300 M of NaH,PO, solution on the shelf. Calculate the mass of solid Na,HPO, compound required and calculate the volume of the 0.300 M of NaH,PO, solution required to make the buffer, then explain briefly how you would make the buffer. You will need the Molar Mass of NażHPO4. Ką of NaH,PO4 = 6.2 x 108. Note: the [NazHPO4] + [NaH,PO4] = 0.0500 M.
You want to make a 500.0 mL of 0.0500 M of phosphate buffer pH = 6.80 from solid Na,HPO, compound and a 0.300 M of NaH,PO, solution on the shelf. Calculate the mass of solid Na,HPO, compound required and calculate the volume of the 0.300 M of NaH,PO, solution required to make the buffer, then explain briefly how you would make the buffer. You will need the Molar Mass of NażHPO4. Ką of NaH,PO4 = 6.2 x 108. Note: the [NazHPO4] + [NaH,PO4] = 0.0500 M.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 93QRT: When 40.00 mL of a weak monoprotic acid solution is titrated with 0.100-M NaOH, the equivalence...
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