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Verified answer
Dik: gr:9 gramv:0,1 liter
Mr glukosa:180
Kb air:0,52
dit: Tb akhir?
jawab:
mol=gr/mr→9/180=0,05 mol
delta Tb=Kb air x Molaritas
delta Tb=0,52x0,05
=5,2x10^-1 x 5x10^-2
=26x10^-3
=2,6x10^-2 derajat celcius
=0,026 derajat celcius
Tb akhir=Tb air+delta Tb
=100+0,026
=100,026 derajat celcius..
maaf berantakan..hehe..
n = 9 / 180
n = 0,05 mol
m = n / massa air (kg)
m = 0,05 / 0,1
m = 0,5 m
larutan glukosa adalah non-elektrolit, maka i = 1
ΔTb = m x Kb x i
ΔTb = 0,5 x 0,52 x 1
ΔTb = 0,26
Tb° air adalah 100°C
Tb = Tb° + ΔTb
Tb = 100 + 0,26
ΔTb = 100,26°C