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Chapitre 4

Quantités chimiques et réactions aqueuses

Stœchiométrie de réaction
Stœchiométrie de réaction
A balanced chemical equation provides a great deal of information in a very succinct format. Chemical formulas provide the identities of the reactants and ...
Réactif limitant
Réactif limitant
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in ...
Rendement de la réaction
Rendement de la réaction
The theoretical yield of a reaction is the amount of product estimated to form based on the stoichiometry of the balanced chemical equation. The ...
Propriétés générales des solutions
Propriétés générales des solutions
Many common substances around us exist as a solution, such as ocean water, air, and gasoline. All solutions are mixtures of substances that are composed ...
Concentration et dilution de la solution
Concentration et dilution de la solution
The relative amount of a given solution component is known as its concentration. Often, though not always, a solution contains one component with a ...
Solutions d'électrolyte et substances non-électrolytes
Solutions d'électrolyte et substances non-électrolytes
Substances that undergo either a physical or a chemical change in solution to yield ions that can conduct electricity are called electrolytes. If a ...
Solubilité des composés ioniques
Solubilité des composés ioniques
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. ...
Réactions chimiques en solutions aqueuses
Réactions chimiques en solutions aqueuses
Chemical substances interact in many different ways. Certain chemical reactions exhibit common patterns of reactivity. Due to the vast number of chemical ...
Réactions de précipitation
Réactions de précipitation
In a precipitation reaction, aqueous solutions of soluble salts react to give an insoluble ionic compound – the precipitate. The reaction occurs ...
Réactions d'oxydoréduction
Réactions d'oxydoréduction
Oxidation–Reduction Reactions Earth’s atmosphere contains about 20% molecular oxygen, O2, a chemically reactive gas that plays an essential ...
Nombre d'oxydation
Nombre d'oxydation
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the ...
Acides, bases et réactions de neutralisation
Acides, bases et réactions de neutralisation
An acid-base reaction is one in which a hydrogen ion, H+, is transferred from one chemical species to another. Such reactions are of central importance to ...
Réactions de synthèse et de décomposition
Réactions de synthèse et de décomposition
Synthesis and decomposition are two types of redox reactions. Synthesis means to make something, whereas decomposition means to break something. The ...
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