AP Chemistry Extra Credit Problems?

Posted on 2015-11-18 06:27:00 in Chemistry by ANIEL

These are the directions.

Bonus 5 points.
Calculate the pH of a polyprotic solution. Directions, provide your work and your solutions to (1) and (2). You can place your answers to (2) in the table provided.

1) Calculate the pH of 5 M of H3PO4.

2) At equilibrium determine the concentrations of; (include the dissociation rxn for each step)
(Note in the table below, I provided one answer to assist you)

H3PO4 ?

H2 PO4- .19 M

HPO4-2 ?

PO4 -3 ?

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