21[11] Okie!!
75.2 g of Phenol is dissolved in a solvent of Kf=14.
If the depression in freezing point is 7K then find the % of phenol that dimerises.
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62yes tapan.. you have to take mass of solvent as 1000g if not given!
11YAAR TAPAN
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BUT REMEMBER TO TAKE MASS OF SOLVENT AS 1000g
2175.2 g of Phenol is dissolved in a solvent of Kf=14.
If the depression in freezing point is 7K then find the % of phenol that dimerises.
Ther is no mention of MASS OF SOLUTE HERE ^^^
so the que. is a bit vague [2]
21Sir, mass of solute kya hoga???
widout that v cant proceed ne.....
11fir tereko ab doubt kiska hai
aggar 1000 g ka hai then i think nishant sir will be the best person to help us [1]
21i too got 75% takin 1kg solvent, dunno if dats allowed or not
11yaar standard maan ke chaala tha
i could be wrong
please rectify if u think my answer is wrong[1]
11
ΔTf=Kf X m
7=14X 75.2/94 X (1-α/2)
α=0.75
so 75 % phenol dimerises
21sorry to fir mein bhool gaya final answer........
fir se karna padega........