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Twenty grams of a solute are added to 10...

Twenty grams of a solute are added to `100g` of water at `25^(@)C`. The vapour pressure of pure water is `23.76 mmHg`, the vapour pressure of the solution is `22.41` Torr.
(a) Calculate the molar mass of the solute.
(b) What mass of this solute is required in `100g` of water of reduce the vapour pressure ot one-half the value for pure water?

A

333 g

B

666 g

C

166 g

D

256 g

Text Solution

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The correct Answer is:
A
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