question_answer

At a certain temperature, the value of the slope of the plot of osmotic pressure [n) against concentration (C in\[\text{mol}\,{{\text{L}}^{-1}}\]) of a certain polymer solution is 291R. The temperature at which osmotic pressure is measured, is (R is gas constant)

A) \[271{{\,}^{o}}C\]  

B) \[18{{\,}^{o}}C\]

C)  564 K  

D)  18 K

Correct Answer: B

Solution :

  Slope, \[RT=291\,R\]or \[T=291\,K\] \[\therefore \] Temperature \[=291-273=18{{\,}^{o}}C\]