Page 79 - Sarah Shafa F_e-Modul Koloid Berbasis PBL

K e g i a t a n B e l a j a r 3
K e g i a t a n B e l a j a r 3

INVESTIGASI

Investigasi Mandiri : Ulasan Materi

Pemurnian Koloid (Dialisis)

S i f a t k o l o i d y a n g d a p a t m e n g a d s o r p s i , b i a s a n y a

b e r c a m p u r d e n g a n i o n - i o n p e n g g a n g g u . K o l o i d d a p a t

d i p i s a h k a n d a r i i o n - i o n t e r s e b u t d e n g a n c a r a d i a l i s i s .

D i a l i s i s a d a l a h p r o s e s p e m u r n i a n p a r t i k e l k o l o i d d a r i

m u a t a n - m u a t a n y a n g m e n e m p e l p a d a p e r m u k a a n p a r t i k e l
k o l o i d t e r s e b u t .

D i a l i s i s d a p a t d i l a k u k a n d e n g a n m e l e w a t k a n p e l a r u t
p a d a s i s t e m k o l o i d m e l a l u i m e m b r a n s e m i p e r m e a b e l

s e p e r t i k a n t o n g d i a l i s i s . I o n - i o n a t a u m o l e k u l t e r l a r u t

a k a n m e n g i k u t i p e l a r u t , s e d a n g k a n p a r t i k e l k o l o i d t i d a k .

Kantong
Dialisis

Air

K a n t o n g d i a l i s i s
Partikel
Molekul
a d a l a h k a n t o n g
Sol
p e m i s a h a n t a r a

p a r t i k e l s o l
Air d e n g a n p e l a r u t n y a
Ion-
ion
( a i r ) .

Sumber:
Essentials of Physical Chemistry

66