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The vapour pressure of water at 20^(@) C...

The vapour pressure of water at `20^(@)` C is 17.5 mm Hg. If 18 g of gulucose`(C_(6)H_(12)O_(6))` is added to 178.2 g of water at `20^(@)` C, the vapour pressure of the resulting solution will be:

A

17.675 mm Hg

B

15.750 mm Hg

C

16.500 mm Hg

D

17.325 mm Hg

Text Solution

Verified by Experts

`(P^(@)-P_(S))/(P_(S))=X_("solute")`
`(17.5-P_(S))/(P_(S))=0.1/10`
`(17.5-P_(S))/(P_(S))=0.01impliesP_(S)=17.325 mm Hg`
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