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 Reagent?

Back

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

Front

How do you identify the limiting reagent in a reaction?

Back

To identify the limiting reagent, calculate the moles of each reactant and determine which one produces the least amount of product.

Front

What is the mole ratio in a balanced chemical 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

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

Back

Mg + 2HCl → MgCl2 + H2

Front

How many moles of water are produced from 8 moles of hydrogen gas in the reaction 2H2 + O2 → 2H2O?

Back

8 moles of water are produced.

Front

What is the mole ratio of H2O to H3PO4 in the reaction P4O10 + 6 H2O → 4 H3PO4?

Back

The mole ratio is 6:4.

Front

What is the first step in solving a stoichiometry problem?

Back

The first step is to write a balanced chemical equation.

Front

What is the purpose of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides of the equation, adhering to the law of conservation of mass.

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance by its molar mass.