An aqueous acid solution conducts electricity, but the pure acid conducts poorly. What does this observation support?
Answer and explanation
Correct answer: Water is important for ion formation
The governing concept is ionisation in aqueous solution. Electric current in a solution is carried by mobile ions, not by neutral molecules alone. Water helps an acid ionise or dissociate to produce hydronium ions and corresponding anions; these charged particles move and conduct electricity. Therefore option A is correct. The observation contradicts the claim that acids never form ions, and colour or solid state does not explain the increased conductivity.
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What is the correct answer to this question?
Water is important for ion formation
Why is this the correct answer?
The governing concept is ionisation in aqueous solution. Electric current in a solution is carried by mobile ions, not by neutral molecules alone. Water helps an acid ionise or dissociate to produce hydronium ions and corresponding anions; these charged particles move and conduct electricity. Therefore option A is correct. The observation contradicts the claim that acids never form ions, and colour or solid state does not explain the increased conductivity.
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.
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