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What is the main purpose of adding a little acid during electrolysis of water?

Answer and explanation

Correct answer: To increase conductivity by increasing ions

Pure water is a very poor conductor because it contains only a small concentration of ions. Adding a small amount of a suitable acid, commonly dilute sulphuric acid in the school experiment, increases the concentration of mobile ions. These ions carry charge through the solution and allow electrolysis to proceed effectively. The acid is not added to colour the water, stop oxygen, or increase hydrogen’s mass, so A is correct.

Related tags

ScienceClass10ElectrolysisConductivityChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourClass 10 Mcq

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