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22-02-2024
Chemistry

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The vapour pressure of pure liquid solvent A is 0.80 atm.When a non volatile substances B is added to the solvent, its vapour pressure drops to 0.60 atm. Mole fraction of the components B in the solution is:

A. 0.50
B. 0.25
C. 0.75
D. 0.40

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