Stoichiometry Review

Front

What is Stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with 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, ensuring that mass is conserved.

Front

What is the mole ratio?

Back

The mole ratio is the ratio of the coefficients of any two substances in a balanced chemical equation, used to convert between moles of reactants and products.

Front

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

Back

The mole ratio is determined by the coefficients in front of the chemical formulas in the balanced equation.

Front

What is the first step in solving a stoichiometry problem?

Back

The first step is to write a balanced chemical equation for the reaction.

Front

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

Back

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

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol).

Front

What is the molar mass of H2O?

Back

The molar mass of H2O (water) is approximately 18.02 g/mol.

Front

If 2 moles of H2 react with O2, how many moles of H2O are produced?

Back

2 moles of H2 produce 2 moles of H2O, according to the reaction 2 H2 + O2 -> 2 H2O.

Front

What is the mole ratio of O2 to H2O in the reaction 2 H2 + O2 -> 2 H2O?

Back

The mole ratio of O2 to H2O is 1:2.