When electric current is passed through a conducting solution, some chemical reaction takes place. The resulting effects are called chemical effects of electric current.
(i) When electric current is passed through water, water dissociates into hydrogen and oxygen.
ii) When electric current is passed through the solution of a metal salt, such as solution of copper sulphate, metal gets deposited at the negative electrode, because metal is positively charged.
(iii) Sometimes, the colour of solution also changes when electric current passes through it.