Why is the cathode negative

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Charge, current and voltage30 min.

physicsElectricityElectric circuit

In this session the electric current is introduced. An analogy model of the water circuit should help to support the conception and conceptual formation of electrical charge, electrical current strength and electrical voltage. Voltage sources are also presented using examples. The direction of the current is introduced and the effects of the electric current are explained. In addition, the electrical current strength is defined as a basic quantity.

Attempt at electrolysis: decomposition of water90 min.

chemistryGeneral ChemistryElectrochemistry

During electrolysis, chemical compounds are broken down using electrical energy. This allows water to be broken down into its components hydrogen and oxygen.

Electrolysis I - Basics30 min.

chemistryPhysical chemistryElectrochemistry

The reversal of the Galvanic cell creates electrolysis.

Decomposition of water considering the volume of gas produced90 min.

chemistryGeneral ChemistryElectrochemistry

Electrolysis takes place in the electrolyser. During electrolysis, chemical compounds are broken down using electrical energy. This allows water to be broken down into its components hydrogen and oxygen. In this experiment, you break water down into oxygen and hydrogen.