A student says sodium chloride is neutral, so its solution will not have ions. Why is this wrong?
Answer and explanation
Correct answer: A neutral solution can also contain ions
The governing concept is the difference between electrical neutrality and the absence of ions. Sodium chloride dissolves in water and dissociates into Na⁺ and Cl⁻ ions. Their positive and negative charges are equal, so the solution is electrically neutral, but the mobile ions can still conduct electricity. Therefore option A is correct; neutrality does not mean that ions are absent, while the other options contradict the solubility and composition of sodium chloride.
Frequently asked questions
What is the correct answer to this question?
A neutral solution can also contain ions
Why is this the correct answer?
The governing concept is the difference between electrical neutrality and the absence of ions. Sodium chloride dissolves in water and dissociates into Na⁺ and Cl⁻ ions. Their positive and negative charges are equal, so the solution is electrically neutral, but the mobile ions can still conduct electricity. Therefore option A is correct; neutrality does not mean that ions are absent, while the other options contradict the solubility and composition of sodium chloride.
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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