Solutions

mere bhai! that was a memory test!!!

read POST #4

YAAR TAPAN
AISE QUES MEIN STANDARD MAAN KE SOLVE KARNA CHAYIYE

AISE QUES CBSE NCERT MEIN BHI HAI

U CANT HELP
BUT REMEMBER TO TAKE MASS OF SOLVENT AS 1000g

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.

Ther is no mention of MASS OF SOLUTE HERE ^^^

so the que. is a bit vague [2]

sir please sought out the case here

Sir, mass of solute kya hoga???

widout that v cant proceed ne.....

fir tereko ab doubt kiska hai
aggar 1000 g ka hai then i think nishant sir will be the best person to help us [1]

aaj hi kiya : 35% hain naa..... JEE 2006

mere bhai tunne to answer 35 % likha hai #2

i too got 75% takin 1kg solvent, dunno if dats allowed or not

yaar standard maan ke chaala tha
i could be wrong
please rectify if u think my answer is wrong[1]

KYUN????

kahi pe likha hai kya??

mass of solvent kya liya ???

ΔT_f=K_f X m

7=14X 75.2/94 X (1-α/2)

α=0.75

so 75 % phenol dimerises

sorry to fir mein bhool gaya final answer........

fir se karna padega........