Which is the correct set of products formed in the chlor-alkali process?
Answer and explanation
Correct answer: Sodium hydroxide, chlorine, and hydrogen
The chlor-alkali process is the electrolysis of concentrated sodium chloride solution, commonly called brine. At the anode, chloride ions are oxidised to chlorine gas; at the cathode, water is reduced to hydrogen gas and hydroxide ions. The sodium ions combine with hydroxide ions to form sodium hydroxide solution. Therefore option A gives all three correct products. The other options contain substances not formed in this process.
Frequently asked questions
What is the correct answer to this question?
Sodium hydroxide, chlorine, and hydrogen
Why is this the correct answer?
The chlor-alkali process is the electrolysis of concentrated sodium chloride solution, commonly called brine. At the anode, chloride ions are oxidised to chlorine gas; at the cathode, water is reduced to hydrogen gas and hydroxide ions. The sodium ions combine with hydroxide ions to form sodium hydroxide solution. Therefore option A gives all three correct products. The other options contain substances not formed in this process.
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.
