hitunglah kenaikan titik didih dan penurunan titik beku dari larutan 5,85 gram garam dapur ( mr=58,5 )dalam 250 gram air ! (kf air=1,86 dan kb air =Q,52

[Sifat Koligatif Larutan]

wt = 5,85 gram
Mr = 58,5
wp = 250 gram
Kf = 1,86
Kb = 0,52
ΔTb = ..............................?
ΔTf = ................................?

m = wt/Mr x 1000/wp
= 5,85/58,5 x 1000/250
= 0,1 x 4
= 0,4 molal

ΔTb = m x Kb
= 0,4 x 0,52
= 0,208°C

ΔTf = m x Kf
= 0,4 x 1,86
= 0,744°C