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The aqueous solution that has the lowest...

The aqueous solution that has the lowest vapour pressure at a given temperature, is

A

0.1m sodium phosphate

B

`0.1m BaCI_(2)`

C

`0.1m NaCI`

D

`0.1m` glucose

Text Solution

Verified by Experts

The correct Answer is:
A
`(DeltaP)/(P^(@)) = ix_(B)`
Here `P^(@)` and `x_(B)` for all solutions are same
`:. Delta P prop i`
`:.` Lowering of vapour pressure is maximum
when i is maximum. Here, i is maximum for `Na_(3)PO_(4)(i=4)`
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