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Tardigrade
Question
Chemistry
A sol of AgI is prepared by mixing equal volumes of 0.1M AgNO3 and 0.2M KI, which of the following statement is correct ?
Q. A sol of
A
g
I
is prepared by mixing equal volumes of
0.1
M
A
g
N
O
3
and
0.2
M
K
I
, which of the following statement is correct ?
3572
184
KCET
KCET 2020
Surface Chemistry
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A
Sol obtained is a negative sol with
N
O
3
−
adsorbed on
A
g
I
21%
B
Sol obtained is a positive sol with
A
g
+
adsorbed on
A
g
I
21%
C
Sol obtained is a positive sol with
K
+
adsorbed on
A
g
I
21%
D
Sol obtained is a negative sol with
I
−
adsorbed on
A
g
I
36%
Solution:
Given reaction is,
A
g
N
O
3
+
K
I
→
A
g
l
(
S
o
l
)
+
K
N
O
3
Here, the amount of
A
g
N
O
3
present is
0.1
M
.
Amount of
K
I
present is
0.2
M
.
Since
K
I
is excess here, thus, sol obtained is a negative sol with
I
adsorbed on
A
g
I
.