The mass of water in grams needs to be determined, if 10.0 g of sample of t-butanol has freezing point of 24.59°C. Concept Introduction: Colligative properties are the properties of solution which depends on the number of particles present in the solution. Some common examples of colligative properties are depression in freezing point, elevation in boiling point, osmotic pressure, lowering in vapor pressure, etc. The number of particles is shown with the help of Van’t Hoff factor ‘i’. The mathematical expression for depression in freezing point are as given below: ΔT f = i × k f ×m ΔT f = Depression in freezing point i = van't Hoff factor k f = Molal depression constant m = Molality

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Chapter 17, Problem 64E

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Interpretation: The mass of water in grams needs to be determined, if 10.0 g of sample of t-butanol has freezing point of 24.59°C.

Concept Introduction: Colligative properties are the properties of solution which depends on the number of particles present in the solution. Some common examples of colligative properties are depression in freezing point, elevation in boiling point, osmotic pressure, lowering in vapor pressure, etc. The number of particles is shown with the help of Van’t Hoff factor ‘i’.

The mathematical expression for depression in freezing point are as given below:

ΔTf = i × kf×mΔTf = Depression in freezing pointi = van't Hoff factorkf=Molal depression constantm = Molality

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