In the chlor-alkali process, which correct pair of products is obtained from aqueous sodium chloride solution?
Answer and explanation
Correct answer: Chlorine and sodium hydroxide
The chlor-alkali process is the electrolysis of concentrated aqueous sodium chloride, or brine. Chloride ions are oxidised at the anode to chlorine gas, while water is reduced at the cathode to hydrogen gas and hydroxide ions. Sodium ions combine with hydroxide ions in solution to form sodium hydroxide. Thus chlorine and sodium hydroxide are in option A; the other pairs contain incorrect elements or products.
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, or brine. Chloride ions are oxidised at the anode to chlorine gas, while water is reduced at the cathode to hydrogen gas and hydroxide ions. Sodium ions combine with hydroxide ions in solution to form sodium hydroxide. Thus chlorine and sodium hydroxide are in option A; the other pairs contain incorrect elements or products.
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.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
