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The density of 3M solution od sodium chl...

The density of 3M solution od sodium chloride is `1.252 gmL_(-1)`. The molality of the solution will be: (molar mass,`NaCI=58.5 g mol_(-1))`.

A

260 m

B

2.18 m

C

2.79 m

D

3.00 m

Text Solution

Verified by Experts

The correct Answer is:
C
(c ) The relation between molarly (M) and mollity (m) is `d=M(1/2+M_2/(1000)),M_2`=Mol. Mnass of solute On putting value `1.252=3(1/m+(58.5)/(1000))` on solving m=2.79 molal.
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