Mole Ratios

Front

What is a mole ratio?

Back

A mole ratio is a ratio that relates the amounts in moles of any two compounds involved in a chemical reaction, derived from the coefficients of a balanced chemical equation.

Front

How do you determine the mole ratio from a balanced chemical equation?

Back

The mole ratio is determined by the coefficients of the reactants and products in the balanced chemical equation.

Front

In the reaction 6CO2 + 6H2O -> C6H12O6 + 6O2, what is the mole ratio of CO2 to C6H12O6?

Back

The mole ratio of CO2 to C6H12O6 is 6:1.

Front

What is the mole ratio of NH3 to H2O in the reaction 4NH3 + 5O2 -> 4NO + 6H2O?

Back

The mole ratio of NH3 to H2O is 4:6 or simplified to 2:3.

Front

If 2 moles of Al2O3 produce 4 moles of Al, what is the mole ratio of Al2O3 to Al?

Back

The mole ratio of Al2O3 to Al is 2:4 or simplified to 1:2.

Front

What is the total number of moles of water produced when 12 moles of NH3 are consumed in the reaction 4NH3 + 5O2 -> 4NO + 6H2O?

Back

18 moles of H2O are produced.

Front

Where can you find the coefficients used to determine mole ratios?

Back

Coefficients are found in the balanced chemical equation.

Front

What is the mole ratio of aluminum to oxygen in the reaction 2 Al2O3 -> 4 Al + 3 O2?

Back

The mole ratio of aluminum to oxygen is 4:3.

Front

How many moles of O2 are needed to react with 10 moles of NH3 in the reaction 4NH3 + 5O2 -> 4NO + 6H2O?

Back

12.5 moles of O2 are needed.

Front

What is the mole ratio of reactants to products in a balanced chemical equation?

Back

The mole ratio of reactants to products is determined by the coefficients in the balanced equation.