SolutionHard
Question
The molar mass of substance forming 7.0% (by mass) solution in water which freezes at −0.93°C, is (The cryoscopic constant of water is 1.86°C kg mol−1).
Options
A.140 g mol−1
B.150.5 g mol−1
C.160 g mol−1
D.155 g mol−1
Solution
$\Delta T_{f} = K_{f}.m \Rightarrow 0.93 = 1.86 \times \frac{7/M}{93/1000} \Rightarrow M = 150.5$
Create a free account to view solution
View Solution FreeMore Solution Questions
The osmotic pressure of 40% (weight/volume) urea solution is 1.64 atm and that of 3.42% (weight/volume) cane sugar is 2....We have 100 mL of 0.1 M KCl solution. To make it 0.2 M,...Two Faraday of electricity is passed through a solution of CuSO4. The mass of copper deposited at the cathode is : (at. ...For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point ?...Which one of the following statements is false?...