Define concentrations of the molecular and ionic species

Reference no: EM13196601

The next 6 questions involve the calculation of concentrations of the molecular and ionic species in an aqueous solution that has an analytical composition of 0.260 M KH2PO4 + 0.160 M K2HPO4.
NOTE: The Ka's for the three acidic protons of phosphoric acid H3PO4 are: 7.11 x 10-3, 6.32 x 10-8, and 4.5 x 10-13. It may be helpful to write out the three dissociation reactions along with their Ka's and pKa's before starting these problems.

What is the pH of this solution?

What is the concentration of the molecular species H3PO4?
What is the concentration of K+ in molarity?
What is the concentration of OH-?
What is the concentration of PO43- in molarity?
What is [H2PO4-]?

Reference no: EM13196601

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