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CBSE Class 12-science Answered

how is colligative prop.. useful for measuring mol.mass?
Asked by jishnu1994 | 20 Aug, 2011, 12:00: AM
answered-by-expert Expert Answer
Colligative properties are those properties of solutions that depend on the number of dissolved particles in solution, but not on the identities of the solutes.

Measurements of these properties for a dilute aqueous solution of a non-ionized solute such as urea or glucose can lead to accurate determinations of relative molecular masses.
Answered by | 23 Aug, 2011, 04:34: AM

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CBSE 12-science - Chemistry
The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K. Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg. Also find the composition of the vapour phase.
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Asked by saritanohar22 | 13 Jan, 2024, 01:25: PM
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CBSE 12-science - Chemistry
A 10% solution of urea ( molar mass 60) is found to be isotonic with a 5% solution of an unknown non-electrolyte substance.The molecular mass of unknown substance is (a) 40% (b) 50% (c) 45% (d) 30%
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CBSE 12-science - Chemistry
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CBSE 12-science - Chemistry
The boiling point of benzene is 353.23k. When 1.80g of a non-volatile solute was dissolved in 90g of benzene , the boiling is raised to 345.11k. Calculate the molar mass of solute (kb=2.53kg mol-1)
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