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QAIPM-2011-Ch-1856: NEET 2011 Chemistry - Class 12 AIPM-2011-Ch-1856 Solution: The freezing point depression constant for water is \(-1.86^ C\ …
The freezing point depression constant for water is . If 5.00 g is dissolved in 45.0 g , the freezing point is changed by . Calculate the van't Hoff factor for .
Multiple Choice Options
- A 2.05
- B 2.63
- C 3.11
- D 0.381
Step-by-Step Verified Solution
According to depression in freezing point,
_ T f = i _ K f _ m
= i _ K f _ w B _ 1000 m B _ w A
Given : _ T f
= 3.82, K f
= 1.86,
w B = 5, m B = 142, w A = 45
i = _ T _ m B _ w A K f _ w B _ 1000
= 3.82 _ 142 _ 45 1.86 _ 5 _ 1000
= 2.63