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, reflecting the law of conservation of mass.

Front

What is a Limiting Reagent?

Back

The limiting reagent is the reactant that is completely consumed first in a chemical reaction, limiting the amount of product formed.

Front

What is an Excess Reagent?

Back

The excess reagent is the reactant that remains after the limiting reagent is completely consumed in a chemical reaction.

Front

How do you calculate the number of moles from grams?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the molar volume of a gas at STP?

Back

The molar volume of a gas at standard temperature and pressure (STP) is 22.4 liters.

Front

What is the mole ratio in a balanced equation?

Back

The mole ratio is the ratio of moles of one substance to the moles of another substance in a balanced chemical equation.

Front

How do you determine the theoretical yield?

Back

The theoretical yield is calculated based on the limiting reagent and the stoichiometry of the balanced equation.

Front

What is the difference between theoretical yield and actual yield?

Back

Theoretical yield is the maximum amount of product that can be produced, while actual yield is the amount of product actually obtained from a reaction.

Front

What is the formula for calculating percent yield?

Back

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