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 limiting reactant?

Back

The limiting reactant is the substance that is completely consumed in a chemical reaction, limiting the amount of product that can be formed.

Front

What is a mole ratio?

Back

A mole ratio is a ratio between the amounts in moles of any two compounds involved in a chemical reaction.

Front

How do you calculate percent yield?

Back

Percent yield = (actual yield / theoretical yield) x 100%.

Front

What is molarity?

Back

Molarity is a measure of concentration, defined as the number of moles of solute per liter of solution.

Front

How many moles of O2 are produced from 6.7 moles of KClO3?

Back

10.1 moles of O2 are produced.

Front

What happens when the limiting reactant is used up?

Back

The chemical reaction stops when the limiting reactant is used up.

Front

How many moles of O2 are consumed when 8 moles of H2 are used in the reaction 2H2 + O2 → 2H2O?

Back

4 moles of O2 are consumed.

Front

What is the formula to calculate moles from grams?

Back

Moles = mass (g) / molar mass (g/mol).

Front

What is the molar mass of NaOH?

Back

The molar mass of NaOH is approximately 40.0 g/mol.