Electrolysis of Water in a Plastic Pipet

Electrolysis of water is performed in a Beral pipet. The explosion of the gas mixture is triggered with a spark,

Materials
One test tubes, one stand, one Beral pipet, two pins, two wires with crocodile clips, 9 V battery, piezo sparkler.

Chemicals
Saturated solution of sodium sulphate.

 
Safety tips
Ware safety googles.

Fig. 1. Apparatus for electrolysis

Fig. 2. Apparatus for ignition of the mixture

Experimental

• Assemble apparatus for electrolysis according to the  Fig. 1;
• Make the pipet stem shorter according to the test tube height;
• Place sodium solution in the tets tube;
• Fill the pipet totally with the solution;
• Pierce the pipet’s bulb with the pins;
• Start the electrolysis by connecting the pins with the battery;
• When the pipet’s bulb is totally filled with gas disconnect the battery;
• Press the pipet’s bulb to remove the rest solution from the bulb which may interfere with making spark;
• Connect the pins with crocodile clips of piezo sparkler;
• Set the pins tips on a distance of 1 mm;
• Pay attention on the pipet’s bulb and press the trigger of the piezo sparkler.
• At the end, collect the solution of sodium sulfate, throw the pipet in the trash bin.