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Properties such as boiling point, freezi...

Properties such as boiling point, freezing point, and vapour pressure of a pure solvent change when solute molecules are added to get homogenous solution. These are called colligative properties.
Anwer the following questions:
i.0.1 M ethanol
ii.`0.1 m Ba_(3)(PO_(4))_(3)`
iii.`0.1 m Na_(2)SO_(4)`
Increasing order of freezing points

A

`(ii) lt (iii) lt (i)`

B

`(iii) lt (ii) lt (i)`

C

`(i) lt (ii) lt (iii)`

D

`(ii) lt (i) lt (iii)`

Text Solution

Verified by Experts

The correct Answer is:
A
Freezing point is higher if `DeltaT_(f)` is lower (depends on `m_(effective)`
`:. 0.1 m Ba_(3)(PO_(4))_(3) lt 0.1 m Na_(2)SO_(4) lt 0.1 m ethanol`
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