Which of the following properties depends on the number of solute particles rather than on their chemical nature?
Answer and explanation
Correct answer: Depression in freezing point
Depression in freezing point is a colligative property. For a sufficiently dilute solution, its magnitude is expressed as ΔTf = iKf m and therefore depends primarily on the number of dissolved particles. Surface tension, viscosity, and refractive index are generally affected by the identity, shape, and intermolecular interactions of the solute, so they are not classified as colligative properties.
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What is the correct answer to this question?
Depression in freezing point
Why is this the correct answer?
Depression in freezing point is a colligative property. For a sufficiently dilute solution, its magnitude is expressed as ΔTf = iKf m and therefore depends primarily on the number of dissolved particles. Surface tension, viscosity, and refractive index are generally affected by the identity, shape, and intermolecular interactions of the solute, so they are not classified as colligative properties.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Hydrocarbons. Topic: Alkanes: Nomenclature, isomerism, conformation (ethane), physical properties, chemical reactions.
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