Chemistry 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 balanced equations.

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 the law of conservation of mass is followed.

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 reactants and products in a balanced equation.

Front

What is the mole ratio of KClO3 to O2 in the reaction 2 KClO3 → 2 KCl + 3 O2?

Back

The mole ratio of KClO3 to O2 is 2:3.

Front

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

Back

10.05 moles of O2 are produced.

Front

What is the mole ratio of MgO to Fe in the reaction 3 Mg + Fe2O3 → 3 MgO + 2 Fe?

Back

The mole ratio of MgO to Fe is 3:2.

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

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

Back

5.27 grams of H2 are produced.

Front

What is the mole ratio of HCl to CaCl2 in the reaction Ca(OH)2 + 2 HCl → CaCl2 + 2 H2O?

Back

The mole ratio of HCl to CaCl2 is 2:1.

Front

What is the first step in solving a stoichiometry problem?

Back

The first step is to write a balanced equation.