Page 1 of 1
Phosphoric acid is a triprotic acid with the pKa values pKal = 2.148, pK₁2 = 7.198, and pK₁3 = 12.375. You wish to prepa
Posted: Sat Jul 02, 2022 8:43 pm
by answerhappygod
- Phosphoric Acid Is A Triprotic Acid With The Pka Values Pkal 2 148 Pk 2 7 198 And Pk 3 12 375 You Wish To Prepa 1 (73.88 KiB) Viewed 12 times
Phosphoric acid is a triprotic acid with the pKa values pKal = 2.148, pK₁2 = 7.198, and pK₁3 = 12.375. You wish to prepare 1.000 L of a 0.0200 M phosphate buffer at pH 7.540. 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? mass NaH₂PO4 = mass Na₂HPO4 = What other combination of phosphoric acid and its salts could be mixed to prepare this buffer? NaH₂PO4 and Na3PO4 H₂PO4 and Na₂HPO4 H₂PO4 and Na3PO4 Na₂HPO4 and Na3PO4 H₂PO4 and NaH₂PO4 g g