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.

Front

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

Back

To determine the mole ratio, look at the coefficients in front of each substance in the balanced equation.

Front

In the reaction 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe, what is the mole ratio of Mg to Fe?

Back

3 mol Mg / 2 mol Fe.

Front

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

Back

18 moles of H2O.

Front

In the equation 2 Al2O3 → 4 Al + 3 O2, what is the mole ratio of aluminum to oxygen?

Back

4:3.

Front

What number should be in front of N2 in the equation ___N2 + ___F2 → ___NF3?

Back

1.

Front

In the reaction 6CO2 + 6H2O → C6H12O6 + 6O2, how many moles of water are needed to produce 2.5 moles of C6H12O6?

Back

15 moles of water.

Front

What is the significance of coefficients in a balanced chemical equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction.

Front

Define stoichiometry.

Back

Stoichiometry is the calculation of reactants and products in chemical reactions based on the balanced equation.

Front

What is the mole ratio of reactants to products?

Back

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