Answer to Question #203359 in Chemistry for Mjd

Question

In the decomposition of phosphoric acid, H3PO4(s), pyrophosphoric acid and water form. How many moles of phosphoric acid are needed to produce 8.34mol of pyrophosphoric acid?

Answer 1

2H₃PO_4(s) = H₂O + H₄P₂O₇

According to the equation, 1 mole of pyrophosphoric acid requires 1 mole of phosphoric acid. Therefore, 8.34 moles of pyrophosphoric acid require 8.34 x 2 = 16.68 moles of phosphoric acid.