In which situation is ppm most suitable?
Answer and explanation
Correct answer: Expressing a very small metal impurity in water
Parts per million is designed for trace concentrations, where the solute amount is extremely small compared with the solution. A tiny metal impurity in water is a typical example. Moles per litre indicate molarity, a 10% mixture is better expressed as a percentage, and a volume ratio is not necessarily ppm.
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What is the correct answer to this question?
Expressing a very small metal impurity in water
Why is this the correct answer?
Parts per million is designed for trace concentrations, where the solute amount is extremely small compared with the solution. A tiny metal impurity in water is a typical example. Moles per litre indicate molarity, a 10% mixture is better expressed as a percentage, and a volume ratio is not necessarily ppm.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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