STOICHIOMETRIC Calculations (Moles to Moles and Moles to Grams)

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 mole in chemistry?

Back

A mole is a unit of measurement used to express amounts of a chemical substance, defined as exactly 6.022 x 10²³ particles (atoms, molecules, etc.).

Front

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

Back

The mole ratio is determined by the coefficients of the balanced equation, representing the relative amounts of reactants and products.

Front

What is the balanced equation for the reaction of hydrogen and chlorine to form hydrochloric acid?

Back

H₂ + Cl₂ → 2HCl.

Front

If 3 moles of H₂ are used, how many moles of Cl₂ are needed?

Back

3 moles of Cl₂ are needed, as the mole ratio is 1:1.

Front

What is the balanced equation for the reaction of calcium carbide with water?

Back

CaC₂ + 2H₂O → C₂H₂ + Ca(OH)₂.

Front

What is the mole ratio of CaC₂ to C₂H₂ in the reaction with water?

Back

1 mole of CaC₂ produces 1 mole of C₂H₂.

Front

In the reaction N₂ + 3H₂ → 2NH₃, what is the mole ratio of N₂ to NH₃?

Back

The mole ratio is 1 mole N₂ to 2 moles NH₃.

Front

How many moles of H₂O are produced from 12 moles of NH₃ in the reaction 4NH₃ + 5O₂ → 4NO + 6H₂O?

Back

18 moles of H₂O are produced.

Front

What is the balanced equation for the reaction of magnesium with hydrochloric acid?

Back

Mg + 2HCl → MgCl₂ + H₂.