Hoffman's apparatus is used for demonstrating the decomposition of water, determination of chemical composition by electrolysis and has applications in the evaluation of the electrochemical equivalent of hydrogen. The glass unit has two connected limbs, each of approximately 50ml capacity (graduated 2 to 50ml), integral reservoir tube and funnel-shaped bulb, with a stopcock at the top of each limb.
Supplied with electrodes, 2 carbon and 2 platinum
Requires 12V power supply
The apparatus should be set up vertically using a clamp and stand to hold it safely
Chemicals required: Water, molar sodium, or potassium sulphate or sulphuric acid
