Question

Give balanced chemical equations for the following:

Chlorine gas is passed through cold, dilute NaOH.

Answer 1

When chlorine gas is passed through cold and dilute sodium hydroxide solution, a disproportionation reaction takes place. In this reaction, chlorine is simultaneously reduced and oxidised, forming sodium chloride (NaCl) and sodium hypochlorite (NaClO).

\[\ce{Cl2 + 2naOH -> NaCl + NaClO + H2O}\]