Question

When the concentrated aqueous solution of substance X is electrolysed, then NaOH, Cl₂ and H₂ are produced. Name the substance X. What is the special name of this process?

Answer 1

Substance X, which gives sodium hydroxide, Cl₂ and H₂ upon electrolysis, is Sodium chloride (NaCl). The electrolysis of sodium chloride solution is called the chlor-alkali process because of the products formed, chlor for chlorine and alkali for sodium hydroxide (NaOH).