Question

What coefficients must be added to balance the following reaction?

_____ Pb + _____ H3PO4 yields _____ H2 + _____ Pb3(PO4)2

A: 3, 2, 1, 1

B: 3, 2, 2, 1

C: 3, 1, 3, 1

D: 3, 2, 3, 1

Answer 1

D: 3, 2, 3, 1 The Pb3(PO4) comes from having 3 Pb and 2 H3PO4. The H2 comes from the 2H3PO4