Química Preparativa

 
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Destilación

Principle

In the experiment introduced here, a mixture of water and methylated spirits made up by students themselves is to be separated into its components. The alcohol contained in the mixture will be distilled and collected in a conical flask. The simple distillation apparatus used here ...

 
Detalles

Num.Producto: P1023200

Separation methods for suspensions and solutions (decanta-tion, centrifugation, filtration, crystallisation)

 
Detalles

Num.Producto: P1132300

Separation of mixtures of liquids and of solutions byextraction, stirring, centrifugation

 
Detalles

Num.Producto: P1132600

Sublimación y solubilidad del Iodo

 
Detalles

Num.Producto: P1138900

Preparation of nitric oxide from nitric acid

 
Detalles

Num.Producto: P1141100

Filtro de carbono y su aplicación práctica

 
Detalles

Num.Producto: P1142400

Producción de condimento para sopa

 
Detalles

Num.Producto: P1255700

LC 2.1

 
Detalles

Num.Producto: P1265300

Experimento modelo de la destilación fraccionada

Principle

When the model experiment on the distillation of petroleum is conducted using the comprehensive chemistry/biotechnology experiments system, the glass equipment clearly stands out against the dark background of the large-format base plate.  The strong contrast between this ...

 
Detalles

Num.Producto: P1308600

Reaction of aldehydes with ammonia

Principle

Aldehydes are not only easily oxidised, they are also capable of addition reactions.  In this way, the addition of dried gaseous ammonia to an ethereal solution of acetaldehyde forms 1-amino-ethanol, which precipitates out of the solution as a solid.


...
 
Detalles

Num.Producto: P1308700

Distillation - determination of the alcohol content of wine with Cobra4

Principle

If the alcohol content of a wine is determined directly with an alcohol meter (hydrometer), the resulting alcohol content reading is approximately 0% by volume. This is due to the composition of the wine. The effect of the alcohol on the density is cancelled out by other ...

 
Detalles

Num.Producto: P1308962

Synthesis of ethyl acetate and butyl acetate

Principle

Carboxylic acids and alcohols can react with esters under suitable conditions. Water forms as a by-product and, under the properly selected reaction conditions, it can be continuously separated by means of a distilling trap (Dean-Stark apparatus). The progress of the reaction can ...

 
Detalles

Num.Producto: P1309100

Demonstration of creeping gases

 
Detalles

Num.Producto: P1316200

Determinación de masa molar por la ley de gases ideales

Principle

All gases may be considered, to a first approximation, to obey the ideal gas equation which relates the pressure p, volume V, temperature T  and amount of substance n of a gas. The amount of gas n is expressed as the number of moles and is equal to m / M  where m ...

 
Detalles

Num.Producto: P3010401

Rectificación - determinación del número de bandejas teóri-cas en una columna de destilación

Principle

The separation power of a rectification (fractionating) column can be determined using an appropriate binary mixture whose equilibrium composition is measured in the distillation flask and in the domed glass head of the distillation apparatus. The number of theoretical trays can ...

 
Detalles

Num.Producto: P3031501

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