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Vapour pressure of solution containing 6...

Vapour pressure of solution containing 6 g of a non-volatile solute in 180 g water is 20.0 Torr. If 1 mole water is further added vapour pressure increases by 0.02. The ratio of vapour pressure of water and molecular weight of non-volatile solute is

A

0.2

B

0.8

C

0.4

D

0.5

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