Waiting
Login processing...

Trial ends in Request Full Access Tell Your Colleague About Jove
Chapitre 4
Stœchiométrie d'une réaction
A balanced chemical equation provides a great deal of information in a very succinct format. Chemical formulas provide the identities of the…
Réactif limitant
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However,…
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
Many common substances around us exist as a solution, such as ocean water, air, and gasoline. All solutions are mixtures of substances that are…
Concentration d'une solution et dilution
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'électrolytes et de 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
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
Chemical substances interact in many different ways. Certain chemical reactions exhibit common patterns of reactivity. Due to the vast number of…
Réactions de précipitation
In a precipitation reaction, aqueous solutions of soluble salts react to give an insoluble ionic compound – the precipitate. The reaction…
Réactions d'oxydoréduction
Earth’s atmosphere contains about 20% molecular oxygen, O2, a chemically reactive gas that plays an essential role in the metabolism of…
Nombres 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
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…
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…
Extraction of Lignin with High β-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield
Lignin valorization strategies are a key factor for achieving more economically competitive biorefineries based on lignocellulosic biomass. Most of…
Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors
Quantifying temperature and moisture at the soil surface is essential for understanding how soil surface biota respond to changes in the environment.…
Experimental Procedure for Laboratory Studies of <em>In Situ</em> Burning : Flammability and Burning Efficiency of Crude Oil
A new method for the simultaneous study of the flammability and burning efficiency of fresh and weathered crude oil through two experimental…

Get cutting-edge science videos from JoVE sent straight to your inbox every month.

Waiting X
Simple Hit Counter