A) Determine how much 1.0 M NaOH must be added to a 100 ml of 10 mM H3PO4 to raise the pH of the solution to 7.0?
B) If 2 volumes of 2.0 M Na2HPO4 are added to 1 volume of 0.1 M H3PO4, what is the pH of the resulting phosphate buffer?
C) If an equal volume of 0.05 M acetic acid is added to the phosphate buffer from part B, what is the pH of the mixture?