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Why does a salt solution conduct electricity even though it is neutral?

Answer and explanation

Correct answer: It has mobile ions

The governing concepts are electrical neutrality and ionic conduction, which are different properties. A neutral sodium chloride solution has balanced positive and negative charges overall, so its net charge is zero. However, dissolved NaCl separates into mobile Na+ and Cl− ions. These ions move toward opposite electrodes and carry electric current, making option A correct. Neutrality does not mean absence of ions; therefore option D is a false generalisation.

Related tags

Salt SolutionIonic ConductionMobile IonsAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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