(a) When of (Molar mass ) is dissolved in of water, the depression in
freezing point is observed to be . Calculate the degree of dissociation of .
[Given : Kf for water ]
(b) Give reasons :
(i) has higher boiling point than Glucose.
(ii) Meat is preserved for a longer time by salting.
a) ΔTf = i Kf m
1 = i x 1.86 x 19.5/78 x 1000/500
i = 1.075
b)
i) Due to dissociation of KCl / number of particles in 0.1 M KCl is more
ii) Due to osmosis bacteria loses its water and dies which causes preservation.