Stoichiometry

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 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

How do you determine the number of moles from grams?

Back

To determine the number of moles from grams, use the formula: Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the mole ratio in a balanced equation?

Back

The mole ratio is the ratio of the coefficients of the reactants and products in a balanced chemical equation, used to convert between moles of different substances.

Front

How many moles of O₂ are produced from 2 KClO₃?

Back

According to the reaction 2 KClO₃ → 2 KCl + 3 O₂, 2 moles of KClO₃ produce 3 moles of O₂.

Front

What is the formula to calculate the mass of a product formed?

Back

Mass of product = (moles of limiting reactant) x (molar mass of product).

Front

What is the significance of the coefficients in a balanced equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction, which is essential for stoichiometric calculations.

Front

How do you identify the limiting reactant in a reaction?

Back

To identify the limiting reactant, calculate the moles of each reactant and compare the mole ratios from the balanced equation.

Front

What is the molar mass of KCl?

Back

The molar mass of KCl (Potassium Chloride) is approximately 74.55 g/mol.