In which case is electrical conductivity most likely to be highest?
Answer and explanation
Correct answer: Aqueous solution of hydrochloric acid
A solution conducts electricity when it contains mobile charged particles. Hydrogen chloride produces hydronium and chloride ions when dissolved in water, and its aqueous solution has a high concentration of ions because HCl is a strong acid. Therefore option C is the best answer. Dry HCl gas and dry sugar lack freely moving ions, while pure water has only a very small concentration of ions and conducts much less effectively.
Frequently asked questions
What is the correct answer to this question?
Aqueous solution of hydrochloric acid
Why is this the correct answer?
A solution conducts electricity when it contains mobile charged particles. Hydrogen chloride produces hydronium and chloride ions when dissolved in water, and its aqueous solution has a high concentration of ions because HCl is a strong acid. Therefore option C is the best answer. Dry HCl gas and dry sugar lack freely moving ions, while pure water has only a very small concentration of ions and conducts much less effectively.
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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