Question

n moles of a non volatile solute are dissolved in wg of water. If `K_(f)` is the molal depression constant of water, the freezing point of the solution will be
A. `(1000 K_(f)n)/(w)`
B. `-(1000K_(f)n)/(w)`
C. `(1000K_(f)w)/(n)`
D. `-(1000K_(f)w)/(n)`

Answer 1

Correct Answer - A
We know that `DeltaT_(f) = (k_(f)xxw xx 1000)/(MxxW)` ltbr. Or `T^(-)-T =(k_(f)xxwxx1000)/(MxxW)`