21 Questions
What happens when electricity is passed through an aqueous solution of sodium chloride?
Sodium chloride decomposes to form sodium hydroxide, chlorine gas, and hydrogen gas.
Which products are formed in the chlor-alkali process?
Chlorine gas and sodium hydroxide
Where is chlorine gas given off in the chlor-alkali process?
At the anode
What is formed near the cathode in the chlor-alkali process?
Sodium hydroxide solution
What is the primary purpose of the chlor-alkali process?
To manufacture bleaching powder for textile and paper industries
What is the role of the anode in the chlor-alkali process?
It gives off chlorine gas
How is bleaching powder produced in the chlor-alkali process?
By the action of chlorine on dry slaked lime
What is the actual composition of bleaching powder represented as CaOCl2?
A complex composition
In which industry is bleaching powder NOT commonly used?
Food industry as a preservative
What role does the cathode play in the chlor-alkali process?
It forms sodium hydroxide solution
What are the three main products of the chlor-alkali process?
Sodium hydroxide, chlorine gas, hydrogen gas
What is the chemical name of the compound sometimes used for faster cooking?
Sodium hydrogencarbonate
What is the composition of baking powder used in baking?
Sodium hydrogencarbonate and ammonium tartaric acid
What role does sodium hydrogencarbonate play in antacids?
It helps in neutralizing excess acid in the stomach
What happens when baking powder is mixed in water or heated?
It produces carbon dioxide gas
What is the purpose of using sodium hydrogencarbonate in soda-acid fire extinguishers?
To release carbon dioxide to extinguish the fire
What is the chemical equation for the formation of sodium hydroxide during the chlor-alkali process?
2NaCl(aq) + 2H2O(l) → 2NaOH(aq) + Cl2 (g) + H2 (g)
What is the primary use of bleaching powder produced from the chlor-alkali process?
To make drinking water free from germs and as an oxidizing agent in many chemical industries
Which gas is given off at the cathode during the chlor-alkali process?
Hydrogen gas
What is the chemical formula of bleaching powder as represented in the text?
CaOCl2
What is the common use of baking soda mentioned in the text?
To make tasty crispy pakoras
Test your knowledge about the chlor-alkali process, which involves passing electricity through brine to produce sodium hydroxide, chlorine gas, and hydrogen gas. Learn about the reactions and products of this important industrial process.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
