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8/19/2019 Soal satuan operasi
1/2
8/19/2019 Soal satuan operasi
2/2
%0 tekanan uap pelarut pd pelarut murni- = "3, mmHgm air = 180 g
J(n+
a. % = %0 . ! air
"2, = "3, . ! air
! air = 0,9&&
! urea = 1 # ! air
= 1 # 0,9&& = 0,023
(. n air =g
BM =180
18 = 10
! urea = nurea
nair +nurea
0,023 =
nurea
10+nurea
0,23 / 0,023 nurea =
nurea
0,023 = 0,9&&nurea
nurea = 0,23 mol
assa urea = n .
= 0,23 mol . $0 gmol = 1",1 g