Stoich Practice

Front

What is the mole ratio of carbon dioxide to water in the combustion of ethane (C2H6)?

Back

The mole ratio of CO2 to H2O in the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O is 4:6 or simplified to 2:3.

Front

What is the mole ratio between N2 and NH3 in the reaction N2 + 3H2 → 2NH3?

Back

The mole ratio of N2 to NH3 is 1:2.

Front

How many grams of H2 are produced from 120 g of Na in the reaction 2Na + 2H2O → 2NaOH + H2?

Back

5.2 g of H2 are produced.

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 are produced.

Front

What mass of O2 is needed to burn 36.1 g of B2H6 in the reaction B2H6 + 3O2 → 2 HBO2 + 2 H2O?

Back

124 g of O2 is needed.

Front

Define stoichiometry.

Back

Stoichiometry is the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation.

Front

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

Back

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

Front

How do you determine the limiting reactant in a chemical reaction?

Back

The limiting reactant is the substance that is completely consumed first, limiting the amount of product formed.

Front

What is the molar mass of a compound?

Back

The molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).