If an acid solution has very little water, why may its electrical conductivity appear low?
Answer and explanation
Correct answer: Because water helps ions form and move
Electrical conduction in an acid solution depends on mobile ions, not simply on the presence of acid molecules. Water provides the medium in which many acids ionise and in which ions can move through the solution. With very little water, ionisation and ionic mobility may be reduced, so the measured conductance can be low; a very viscous or poorly hydrated medium also limits movement. The acid is not inherently always non-conducting, and colour or container material is not the governing reason. Thus A is correct.
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What is the correct answer to this question?
Because water helps ions form and move
Why is this the correct answer?
Electrical conduction in an acid solution depends on mobile ions, not simply on the presence of acid molecules. Water provides the medium in which many acids ionise and in which ions can move through the solution. With very little water, ionisation and ionic mobility may be reduced, so the measured conductance can be low; a very viscous or poorly hydrated medium also limits movement. The acid is not inherently always non-conducting, and colour or container material is not the governing reason. Thus A is correct.
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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