passage
0.1mole of a weak acid is dissolved on 500g of water.the degree of ionizatoin of the acid HX is 0.3.The colligative properties were found to be in accordance with those of an ideal solution.
Kb for water is 0.52K/m,Kf for water is 1.86K/m
1.The vapour pressure of water is dropped by
(a) 0.65% (b) 1.3% (c) 8.5% (d) 13.0%
2.Van't Hoff factor for the acid is
(a) 0.13 (b) 1.03 (c) 1.06 (d) 1.3
3.The freezing point depression of the solution
in degree is
(a) 0.372 (b) 0.242 (c)0.484 (d) 0.186
please give complete solution with method
ANSWERS: 1.(b)
2.(d)
3.(c)
i=1+alpha=1.3
Since i is known other CPs can be calculated.