SolutionHard
Question
An aqueous solution of non-volatile and nonelectrolyte solute boils at 100.78°C. It should freeze at (for water, Kf and Kb are 1.86 and 0.52 K-kg/mol, respectively)
Options
A.2.79°C
B.270.21°C
C.−2.79°C
D.−270.21°C
Solution
$\frac{\Delta T_{f}}{\Delta T_{b}} = \frac{K_{f}}{K_{b}} \Rightarrow \frac{\Delta T_{f}}{0.78} = \frac{1.86}{0.52} \Rightarrow \Delta T_{f} = 2.79^{0}C$
∴ F.P. of solution = –2.79° C
Create a free account to view solution
View Solution FreeMore Solution Questions
The concentration of pollutant in ppm (w/w), that has been measured at 450 mg per 150 kg of sample is :...The resistance of a solution ′A′ is 40 ohm and that of solution ′B′ is 70 ohm, both solutions be...Select correct statements :...Of the following measurements, the one most suitable for the determination of the molecular mass of oxyhaemoglobin, a mo...A teacher one day pointed out to his students the preculia fact that water is unique liquid which freezes exactly at 0o ...