Electrolysis

Electrolysis of copper sulphate solution using platinum or carbon electrodes

Electrolysis of copper sulphate solution using platinum or carbon electrodes Copper sulphate solution contains Cu2+ ions and SO/ – ions together with H + and OH – ions from the water. During electrolysis, Cu2+ and H+ ions: migrate to the cathode, but only the Cu2+ ions are discharged. The H + ions remain in solution. As each Cu2 …

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The Hofmann voltameter

The Hofmann voltameter A convenient form of apparatus for collecting the gases liberated during the electrolysis of various liquids was designed by the German chemist Hofmann (Fig. 37.1). It consists of two graduated tubes fitted with taps and provided with platinum electrodes. The tubes are connected near the bottom by a short cross tube which has an upright …

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Electrolysis

Electrolysis One of the earliest industrial applications of the electric current was the coating of base metals with a layer of a more expensive metal. This is called electroplating, and it serves. a double purpose. It protects the base metal from atmospheric corrosion and also gives it a more attractive appearance. Silver plating has long been used to enhance …

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