Page 55 - e-Module Berbasis Problem Based Learning pada Materi Koloid

K e g i a t a n B e l a j a r 2
K e g i a t a n B e l a j a r 2

INVESTIGASI

Investigasi Mandiri : Ulasan Materi

KOAGULASI

A p a k a h k a l i a n m a s i h i n g a t , j i k a p a r t i k e l k o l o i d
m e m i l i k i m u a t a n ? P a r t i k e l k o l o i d m e m i l i k i m u a t a n

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

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

P a r t i k e l k o l o i d ( s o l )

m e n g g u m p a l

i o n N a + d i t a m b a h k a n P a r t i k e l k o l o i d ( s o l ) P a r t i k e l k o l o i d ( s o l )
k e d a l a m p a r t i k e l m e n j a d i t i d a k t e r k o a g u l a s i
k o l o i d ( s o l ) y a n g b e r m u a t a n ( m e n g e n d a p )
b e r m u a t a n n e g a t i f
Sumber:
Essentials of Physical Chemistry

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

s e h i n g g a m e m b e n t u k e n d a p a n . Z a t t e r d i s p e r s i ( p a r t i k e l

k o l o i d ) b e r g a b u n g m e n j a d i p a r t i k e l y a n g l e b i h b e s a r

s e h i n g g a m e n g e n d a p a t a u m e n g g u m p a l .

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