Question

If the molal elevation constant of solvent is 0.5 kg per mol ,then what will be the elevation in boilling point for 0.1 m solution?

Answer 1

Explanation:

Given If the molal elevation constant of solvent is 0.5 kg per mol ,then what will be the elevation in boiling point for 0.1 m solution?

• We know that molal elevation constant is given by
• So ΔTb = Kb x m where the elevation in boiling point is ΔTb
• Molal elevation constant = Kb = 0.5 K kg / mol
• Molality of solution m = 0.1 m
• Now ΔTb = 0.5 x 0.1
•              = 0.05 K

Therefore the elevation in boiling point will be 0.05 K

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