zat x(non elektrolit) sebanyak 15 gram dilarutkan dalam 100 gram air, larutan mendidih pada suhu 101,3. jika tetapab kenaikan titik didih molal = 0,52°C/m tent

Tb larutan = Tb° Air + ∆Tb
101,3 = 100+ ∆Tb
maka ∆Tb = 1,3

∆Tb= m×Kf
1,3 = mol × 1000/p × Kf
1,3 = 15/Mr × 1000/100 × 0,52
maka Mr = 15/1,3 × 10 × 0,52
Mr = 60.

sekian, Terima kasih.

wt = 15 gr
wp = 100 gr
Tb = 101,3°C
Kb = 0,52°C
Mr = .............................?

ΔTb = Tb° - Tb = 100 - 101,3 = 1,3°C

∆Tb= wt/Mr x 1000/wp x Kb
1,3 = 15/Mr x 1000/100 x 0,52
1,3 = 78/Mr
Mr = 78/1,3
Mr = 60