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5 moles of sucrose (molecular mass = 342...

5 moles of sucrose (molecular mass = 342g `"mol"^(-1)` ) dissolved in 1000g of water (molecular mass = 18g `"mol"^(-1)`). Vapour pressure of pure water at 298K = 4:57 mm Hg.
What will be the mole fraction of sucrose in water?

A

`0.8261`

B

` 0.0826`

C

`0.4376`

D

`0.0435 `

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