Tentukan titik beku dan titik didih larutan urea (co(NH2) 30 gram daam 500gram air kf=1,86 kb=0,52

m = gram/Mr x 1000/p
= 30/60 x 1000/500
= 1 molal
Delta Tb = m Kb
= 1 x 0,52
= 0,52 °C
Tb = 100,52°C

Delta Tf = m Kf
= 1 x 1,86
= 1,86°C
Tf = -1,86°C