Question

Consider the balanced equation below.

3Fe+4H2O--->Fe3O4+4H2

What is the mole ratio of Fe3O4 to Fe?

A. 1:3
B. 1:4
C. 3:1
D. 4:3

Answer 1

mole ratio is the ratio between the amount in moles of any two compounds involved in a chemical reaction
3
the mole of Fe3O4 is 1 mole while that of Fe is 3 moles from the reacting equation below
Fe + 4 H2O ----> Fe3O4 + 4 H2
therefore the mole ratio of Fe3O4 to Fe is 1:3(answer A)