Quick Answer: The Electrolysis of Water Model decomposes water with direct current through platinum electrodes and collects the gases in two inverted test tubes so their relative volumes can be compared.
Last updated: October 2026
Key Features
Platinum electrodes attached to insulated connecting rods
Binding posts mounted on a non-conducting support
Two clips hold inverted test tubes for gas collection
Runs from a 6 V battery or a 10 V DC power supply
Support rests across the top of a 1 L beaker, which is not included
Can also be used with other aqueous solutions and for electroplating demonstrations
Technical Specifications
Specification
Value
Electrode type
Platinum electrodes
Operating power
6 V battery or 10 V DC power supply
Recommended vessel
1 L beaker (not included)
Test tube holders
Two clips for inverted test tubes
About This Product
The support is laid across a 1 L beaker of water, the test tubes are clipped upside down above the electrodes, and current is passed from the battery or power supply. Gas collects in each tube, letting students trap the products of electrolysis and estimate their relative volumes. The same set-up can be used to investigate other aqueous solutions and, with suitable components, to demonstrate electroplating.
Frequently Asked Questions
Q1. What power source does the apparatus need? It operates from either a 6 V battery or a 10 V DC power supply connected through the binding posts.
Q2. Is a beaker included? No. The support is designed to rest across the top of a 1 L beaker, which is not included with the apparatus.
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