8/19/2019 Soal satuan operasi

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8/19/2019 Soal satuan operasi

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%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