Phosphoric acid production

Question

Impure phosphoric acid for use in the manufacture

of fertilizers is produced by the reaction

of sulfuric acid on phosphate rock, of

which a principal component is Ca3(PO4)2.

The reaction is

Ca3(PO4)2(s) + 3 H2SO4(aq) →

3 CaSO4(s) + 2 H3PO4(aq)

How to get the rate of the reaction?

Answer 1

The only way to find the rate of the reaction is by experimentation. You can't calculate it without additional information.

To find the rate of reaction you would either measure the disappearance of Ca3(PO4)2 or H2SO4 over time, or measure the appearance of CaSO4 or H3PO4 over time.