Kimia Sebanyak 6 gram urea (M₁ = 60) dilarutkan dalam 500 gram air. Tentukan titik didih larutan (Kbair=0,52°C/m)?​

laurafaheyulv – June 09, 2023

Sebanyak 6 gram urea (M₁ = 60) dilarutkan dalam 500 gram air. Tentukan titik didih larutan (Kbair=0,52°C/m)?​

Penjelasan:

massa = 6 gram

Mr = 60

p = 500 gram

Kb = 0,52°C/m

Titik didih larutan (Tb laruta ) ... ?

ΔTb = Kb . m

ΔTb = Kb . (massa/Mr . 1000/p)

ΔTb = 0,52 . (6/60 . 1000/500)

ΔTb = 0,52 . 0,2

ΔTb = 0,104°C

ΔTb = Tb larutan - Tb pelarut

0,104°C = Tb larutan - 100°C

Tb larutan = 100°C + 0,104°C

Tb larutan = 1,104°C

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