2H3PO4 + 3Na2SO4 → 2Na3PO4 + 3H2SO4 Molar masses:

Sodium sulfate = 142.05 g/mol

Phosphoric acid = 98 g/mol

Sodium phosphate = 163.94 g/mol

Sulfuric acid = 98.09 g/mol

1.

a) If 1.08 g of sodium sulfate reacts with an excess of phosphoric acid, how much sulfuric acid is produced? (0.74577)

b) If 0.726 g of sulfuric acid is produced in the laboratory experiment, what is the percent yield of sulfuric acid? (97.3190)

2.

If 3.2 moles of sodium sulfate is used in the reaction, how many formula units of phosphoric acid is needed to completely react?
(1.28427×1024)