Chapter 11 Stoichometry

Stoichiometry

It is the study of quantitative relationships between reactants and products in a chemical reaction

According to the law of conservation of mass, what happens in a chemical reaction?

Matter can neither be created nor destroyed.

Why is the balanced chemical equation crucial in stoichiometry?

It represents the number of moles of reactants and products and ensures that matter is conserved.

Define theoretical yield.

Max amount of product produced from a reaction (the calculated amount made by you).

What is the limiting reactant in a chemical reaction?

The reactant which is completely used up.

What does the mole ratio represent in stoichiometry?

Ratio between the number of moles of any two of the substances in a balanced chemical equation.

Mole Ratio Formula

Moles Unknown/Moles Known

What is the relationship between coefficients in a chemical equation and moles of substances?

Coefficients indicate the number of moles of reactants and products

What is the excess reactant in a chemical reaction?

The reactants where there is more than we need.

Define actual yield.

Amount of product produced when the chemical reaction is carried out from the experiment (The amount from the reaction).

Define percent yield.

Ratio between actual yield to the theoretical yield.

What does the stoichiometry map entail in terms of conversions?

It involves conversions between moles, grams, and volume (for gases) using various ratios and formulas.

Percent Yield formula

Actual/Theoretical x 100

Mole to Mole conversion

Known Moles x Molar Ratio

Mole to Grams conversion

Known Moles x Molar Ratio x Molar Mass Unk/ 1 Mole Unk

Mass to Mass conversion (mass provided)

Known Mass x 1 Mole K/Molar Mass K x Molar Ratio x Molar Mass Unk

Mass to Mass conversion (moles provided)

Known Moles x Molar Ratio x Molar Mass Unk/ 1 Mole Unk

Volume conversion (gas provided)

Known Liters x 1 Mole K/22.4L K x Molar Ratio x 22.4L/1 Mole Unk

Volume Conversion ( moles provided)

Known Moles x Molar Ratio x 22.4 L / 1 Mole

What is the Limiting reactant in the percent yield formula?

Theoretical yield

What is based on the Law of Conservation and Mass?

Stoichiometry

A Relationship between any two substances in a balanced equation

Mole Ratio