Phosphoric acid is a triprotic acid with the p?a values p?a1=2.148, p?a2=7.198, and p?a3=12.375. You wish to prepare 1.000 L of a 0.0400 M phosphate buffer at pH 7.800. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture? What other combination of phosphoric acid and its salts could be mixed to prepare this buffer? (select as many as are true) H3PO4 and NaH2PO4 Na2HPO4 and Na3PO4 NaH2PO4 and Na3PO4 H3PO4 and Na2HPO4 H3PO4 and Na3PO4
Phosphoric acid is a triprotic acid with the p?a values p?a1=2.148, p?a2=7.198, and p?a3=12.375. You wish to prepare 1.000 L of a 0.0400 M phosphate buffer at pH 7.800. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture? What other combination of phosphoric acid and its salts could be mixed to prepare this buffer? (select as many as are true) H3PO4 and NaH2PO4 Na2HPO4 and Na3PO4 NaH2PO4 and Na3PO4 H3PO4 and Na2HPO4 H3PO4 and Na3PO4
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.121QP: The equilibrium equations and Ka values for three reaction systems are given below....
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Phosphoric acid is a triprotic acid with the p?a values p?a1=2.148, p?a2=7.198, and p?a3=12.375.
You wish to prepare 1.000 L of a 0.0400 M phosphate buffer at pH 7.800. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture?
What other combination of phosphoric acid and its salts could be mixed to prepare this buffer? (select as many as are true)
H3PO4 and NaH2PO4
Na2HPO4 and Na3PO4
NaH2PO4 and Na3PO4
H3PO4 and Na2HPO4
H3PO4 and Na3PO4
Please answer very soon will give rating surely
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