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The vapour pressure of water at20^@Cis 1...

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

A

`17.675mmHg`

B

`15.750mmHg`

C

`16.500mmHg`

D

`17.325mmHg`

Text Solution

Verified by Experts

The correct Answer is:
D
`(P^(@)-P_(S))/(P_(S))=(wxxM)/(mxxW)`
`(17.5-P_(S))/P_(S)=(18xx18)/(180xx178.2)`
`(17.5-P_(S))/(P_(S))=0.01`
`P_(S)=17.325mmHg`
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