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Question
Chemistry
The ratio of the number of moles of AgNO3, Pb(NO3)2 and Fe(NO3)3 required for coagulation of a definite amount of a colloidal sol of silver iodide prepared by mixing AgNO3 with excess of KI will be
Q. The ratio of the number of moles of
A
g
N
O
3
,
P
b
(
N
O
3
)
2
and
F
e
(
N
O
3
)
3
required for coagulation of a definite amount of a colloidal sol of silver iodide prepared by mixing
A
g
N
O
3
with excess of
K
I
will be
2105
200
Surface Chemistry
Report Error
A
1 : 2 : 3
13%
B
3 : 2 : 1
15%
C
6 : 3 : 2
69%
D
2 : 3 : 6
2%
Solution:
With excess of
K
I
, colloidal particles will be
[
A
g
I
]
I
−
∴
Molar ratio required for coagulation of same amount of
[
A
g
I
]
I
−
is
=
1
:
2
1
:
3
1
=
6
:
3
:
2
