Why is hydrochloric acid more conducting than ethanoic acid at the same concentration?
Answer and explanation
Correct answer: It forms more ions
Electrical conductivity in an aqueous solution depends mainly on the concentration and mobility of charged ions. At the same concentration, HCl ionises almost completely and produces many H3O+ and Cl− ions. Ethanoic acid ionises only partially, so it produces fewer ions, even though it dissolves in water. The larger number of charge carriers makes the HCl solution more conducting. Options B, C, and D contradict the properties of HCl.
Frequently asked questions
What is the correct answer to this question?
It forms more ions
Why is this the correct answer?
Electrical conductivity in an aqueous solution depends mainly on the concentration and mobility of charged ions. At the same concentration, HCl ionises almost completely and produces many H3O+ and Cl− ions. Ethanoic acid ionises only partially, so it produces fewer ions, even though it dissolves in water. The larger number of charge carriers makes the HCl solution more conducting. Options B, C, and D contradict the properties of HCl.
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.
