Which pair correctly lists products obtained from common salt in the chlor-alkali process?
Answer and explanation
Correct answer: Chlorine and sodium hydroxide
The chlor-alkali process is the electrolysis of concentrated aqueous sodium chloride, commonly called brine. At the anode, chloride ions form chlorine gas; at the cathode, water produces hydrogen gas and hydroxide ions. The sodium ions combine with hydroxide ions to form sodium hydroxide in solution. Hence chlorine and sodium hydroxide are valid products, making option A correct. The other pairs belong to unrelated reactions or processes.
Frequently asked questions
What is the correct answer to this question?
Chlorine and sodium hydroxide
Why is this the correct answer?
The chlor-alkali process is the electrolysis of concentrated aqueous sodium chloride, commonly called brine. At the anode, chloride ions form chlorine gas; at the cathode, water produces hydrogen gas and hydroxide ions. The sodium ions combine with hydroxide ions to form sodium hydroxide in solution. Hence chlorine and sodium hydroxide are valid products, making option A correct. The other pairs belong to unrelated reactions or processes.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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