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  1. Determine the weight in grams of sodium dihydrogen phosphate (NaH2PO4.H2O) and disodium hydrogen phosphate (Na2HPO4) needed to prepare I L of a standard buffer at pH 7.00 with a total phosphate concentration of 0.1 M. (pKa of dihydrogen phosphate = 6.86).

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Related questions

What is the pH of a buffer if 12.2 grams of sodium hydrogen phosphate and 12.2 g of sodium

dihydrogen phosphate are added to 200 ml of distilled water? What is the molarity of phosphate ion in
this buffer?
**How many grams of sodium hydrogen phosphate and sodium dihydrogen phosphate are needed
to make 300 mL of a 0.12 M phosphate buffer with a pH of 7.2.
** How many grams of sodium hydrogen phosphate and sodium dihydrogen phosphate are needed
to make 500 mL of a 0.16 M phosphate buffer with a pH of 7.3.
**How many grams of sodium hydrogen phosphate and sodium dihydrogen phosphate are needed
to make a liter of 0.08 M phosphate buffer with a pH of 6.8.
please help
* What is the pH if 10 mL of 0.3 M HCl is added to 100mL of a 0.13 M phosphate buffer that has a
starting pH of 7.2.
*What is the pH of a buffer if 5.0 grams of sodium hydrogen phosphate and 4.2 g of sodium
dihydrogen phosphate are added to 300 ml of distilled water?
*What is the pH of a buffer if 34.2 grams of sodium hydrogen phosphate and 12.5 g of sodium
dihydrogen phosphate are added to 300 ml of distilled water? What is the molarity of phosphate ion in
this buffer?


Calculate the volume of 0.25mol/L sodium dihydrogen phosphate (NaH2PO4) that must be added to 150mL of 0.50mol/L sodium hydrogen phosphate (NaHPO4) to prepare a buffer solution of pH 7.400

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