Electroquímica

 
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Calidad del auga - contaminación con metales pesados

Principle

Heavy-metal ions may be carried into surface or ground water from mining fields or via the waste water of galvanic or similar production sites. They block the effect of enzymes so that the processes in the metabolism of the organisms that are controlled by these enzymes may ...

 
Detalles

Num.Producto: P0990162

Electrólisis del agua

Principle

In the case of simple electrolysis (for example electrolysis of water) an electrolysis cell consists of two identical electrodes (mostly graphite or platinum), which are immersed in an (electrolyte) solution. In this experiment sodium hydroxide solution is used as an electrolyte ...

 
Detalles

Num.Producto: P1028200

Introducción a las reacciones de transferencia de electrones

Principle

In this experiment students examine the reaction of metals in salt solutions.  Students put iron or iron wool into a copper sulfate solution and solid copper into an iron sulfate solution.  With this experiment students learn that metals can be deposited from a salt ...

 
Detalles

Num.Producto: P1033000

Deposición electrolítica y cantidad de electricidad (Primera ley de Faraday)

Principle

During an electrolysis reaction, the deposited mass m of a substance is directly proportional to the flow of charge (First Faraday's law). The second Faraday law states that the electrochemical equivalents k (deposited mass per charge unit) behave like the equivalent masses ...

 
Detalles

Num.Producto: P1147500

Hidrógeno en las series redox: electrodo normal de hidrógeno

Principle

The redox series is one of the most important tools in "electrochemistry". The redox series arrange metals according to their efforts to emit electrons. The redox series generally begins with the base metals (e.g., iron, zinc) and goes to noble metals (e.g., gold, ...

 
Detalles

Num.Producto: P1148400

Ley de Faraday

Principio

Al conducir la corriente eléctrica a través de una solución, se puede producir la transformación de la materia. La corriente es la fuerza motriz de la reacción de reducción-oxidación. Al electrolizar el agua, que se vuelve ...

 
Detalles

Num.Producto: P1309500

Electrólisis de sales fundidas

Qué se aprende

Con este experimento se pueden mostrar los pasos más importantes de esta técnica de manera simple. Debido al alto punto de fusión del cloruro de sodio se utiliza blanqueador con cloro como sustancia del modelo.

 
Detalles

Num.Producto: P1310500

Electrolisis

Principle

The characteristic curve of current against voltage of an electrolytic bath containing copper sulphate solution and having copper electrodes is measured. Visible changes in the electrodes and the bath are observed.

Benefits

  • Flexible experimenting thanks to wireless data ...
 
Detalles

Num.Producto: P1375160

Electrolisis con measureAPP

 
Detalles

Num.Producto: P1375168

Electrolysis with SMARTsense

 
Detalles

Num.Producto: P1375169

Conductividad de electrolitos fuertes y débiles (con Cobra4)

Principle

It is possible to differentiate between strong and weak electrolytes by measuring their electrical conductance. Strong electrolytes follow Kohlrausch's law, whereas weak electrolytes are described by Ostwald's dilution law. The examination of the concentration dependence of the ...

 
Detalles

Num.Producto: P3060660

Titulación conductométrica con Cobra4

Principle

The electric conductivity of aqueous electrolyte solutions is determined by the type and number of charge carriers at constant temperature. Characteristic changes in conductivity are connected with changes in the ionic composition of reacting systems. These can be used in the ...

 
Detalles

Num.Producto: P3060760

Determinación del coeficiente de actividad por medición de c nductividad con Cobra4

Principle

The equivalent conductivity of strong electrolytes depends on their concentration. The quotient of the equivalent conductivity at a certain concentration and the equivalent conductivity at infinite dilution is called the conductivity coefficient, which is the result of ...

...

 
Detalles

Num.Producto: P3060862

Ecuación de Nernst con Cobra4



Principle

The Nernst equation expresses how the electrical potential of an electrode in contact with a solution of ions depends upon the concentrations (more accurately, activities) of those ions. The equation may be experimentally verified using an electrochemical cell formed from ...

 
Detalles

Num.Producto: P3060962

Curva de titulación y capacidad de tamponamiento con Cobra4

Principle

pH values can be measured with the aid of electrochemical measurements and proton-sensitive electrodes (e.g. glass electrodes). By combining a glass electrode with a reference electrode in one housing, a single-rod glass electrode, which is appropriate for acid-base titrations, ...

 
Detalles

Num.Producto: P3061660

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