Chemistry 11: Mole to Mole Conversions

· Coefficients in balanced equations tell us the number of moles reacted or produced

· They can also be used as conversion factors

Example: 3X+Y=4Z

6 mol+2mol= 4Z

1.5 mol+0.5 mol= 1Z

6.15mol+2.05mol=4.1mol

v WHAT YOU NEED OVER WHAT YOU HAVE

Ex: 7.2mol x 1/3

· If 0.15 mol of methane are consumed in a combustion reaction, how many moles of CO₂ are produced?

1Ch₄+2O₂= 1CO₂+2H₂O

0.15mol x 1/1 = 0.15 mol of CO₂

· How many moles of bauxite (Aluminum Oxide) are required to produce 1.8 mol of pure Aluminum?

2Al₂O₃= 4Al+3O₂

1.8 mol x 2/4 (what you need over what you have) = 0.9 mol of bauxide

· When 1.5 mol of Copper reacts with Iron (II) Chloride, how many moles of Iron should be produced?

1Cl+1Fecl₂=1Fe+1CuCl₂

1.5 mol x 1/1 = 1.5 mol

By: Krysta Del Rosario :)

Chemistry 11