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Why does electric current pass more easily when a small amount of dilute acid is added during the electrolysis of water?

Answer and explanation

Correct answer: The acid forms ions in water and increases the number of mobile charge carriers.

Pure water has a very low concentration of ions due to self-ionisation, so it is a poor conductor of electricity. Adding a dilute acid increases the number of mobile cations and anions that carry charge through the solution. Therefore, electric current passes more easily. Option B is incorrect because acid does not convert water molecules into electrons; conduction in the solution occurs through ions.

Related tags

Water ElectrolysisIonic ConductionAcidified WaterElectrolytesChemical ReactionsClass 10 Science

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