Question

Predict the products of electrolysis in the following

1. Aqueous sodium chloride solution using platinum electrodes

2. Aqueous copper sulphate solution using platinum electrodes

Answer 1

1) The products of electrolysing aqueous sodium chloride solution are hydrogen gas, chlorine gas and sodium hydroxide solutionThe products of electrolysing aqueous sodium chloride solution are hydrogen gas, chlorine gas and sodium hydroxide solution

2) the cathode becomes covered with a reddish layer of pure copper. At the anode the action is identical with that which occurs in the case of acidified water described in the previous section. OH – ions are discharged and combine in pairs to give water and oxygen gas.