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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?
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Solution
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).
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