Electrolysis of aqueous solution of Brine (NaCl) gives

The reaction at the cathode is:2H2​O(l)+2e−→H2​(g)+2OH−The reaction at the anode is:Cl−→12​Cl2​(g)+1e−The overall reaction is as follows:NaCl(aq)+H2​O(l)→Na+(aq)+OH−(aq)+12H2​(g)+12​Cl2​(g)