Which substance remains in the solution during the chlor alkali process?
Answer and explanation
Correct answer: Sodium hydroxide
The governing concept is electrolysis of brine in the chlor-alkali process. Brine contains sodium chloride and water. During electrolysis, chlorine gas is released at the anode and hydrogen gas is released at the cathode, while sodium hydroxide is formed and remains in the aqueous solution. The overall reaction is 2NaCl + 2H₂O → 2NaOH + Cl₂ + H₂. The other choices are unrelated substances and are not the product left in the solution.
Frequently asked questions
What is the correct answer to this question?
Sodium hydroxide
Why is this the correct answer?
The governing concept is electrolysis of brine in the chlor-alkali process. Brine contains sodium chloride and water. During electrolysis, chlorine gas is released at the anode and hydrogen gas is released at the cathode, while sodium hydroxide is formed and remains in the aqueous solution. The overall reaction is 2NaCl + 2H₂O → 2NaOH + Cl₂ + H₂. The other choices are unrelated substances and are not the product left in the solution.
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.
