Complete Hofmann Voltameter
The Hofmann voltameter is a laboratory apparatus used to demonstrate the electrolysis of water and its decomposition into hydrogen and oxygen using an electric current. This equipment allows the gases generated to be collected separately and their volumes compared, clearly showing the stoichiometric ratio of water.
It is a classic instrument in chemistry, electrochemistry, and science education, commonly used in teaching laboratories, training centers, and experimental setups.
How the Hofmann voltameter works
The apparatus consists of three interconnected tubes filled with electrolyte.
When direct current is applied between the electrodes, water decomposes:
- Hydrogen is produced at the cathode
- Oxygen is produced at the anode
The gases accumulate in the graduated tubes, allowing their volumes to be measured and confirming the characteristic 2:1 ratio of the water molecule.
This method is used to demonstrate the laws of electrolysis and the behavior of redox reactions.
Complete set included
This model is supplied as a complete set, ready for laboratory use, and includes all necessary components for assembly:
- Hofmann voltameter
- Stand with base and rod
- Clamp and bosshead
- Carbon electrodes
- Constantan electrodes
The set allows electrolysis experiments to be carried out safely and stably on the laboratory bench.
Laboratory applications
The Hofmann voltameter is used in:
- Chemistry and physics practicals
- Teaching electrolysis
- Scientific demonstrations
- Electrochemistry experiments
- Educational and university laboratories
Its glass design allows clear observation of gas formation during the experiment.
Use and maintenance
For proper operation, it is recommended to:
- Use a suitable electrolyte for electrolysis
- Ensure stable mounting on the stand
- Clean the apparatus after each use
- Avoid impacts or stress on the glass
Proper use ensures experimental accuracy and extends the equipment’s lifespan.
Buying a Hofmann voltameter
At Pobel, you will find electrochemistry equipment and laboratory materials for teaching and experimentation, suitable for educational centers, laboratories, and scientific practice.
If you need advice on this equipment or its accessories, our technical team can help you choose the right configuration.
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