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Question
Chemistry
Which of the following can be oxidised by SO2 ?
Q. Which of the following can be oxidised by
S
O
2
?
1808
284
AIIMS
AIIMS 2016
The p-Block Elements - Part2
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A
K
2
C
r
2
O
7
8%
B
M
g
65%
C
H
2
O
10%
D
All of these
16%
Solution:
With
K
2
C
r
2
O
7
,
S
O
2
works as reducing agent.
K
2
C
r
2
O
7
+
H
2
S
O
4
+
3
S
O
2
⟶
K
2
S
O
4
+
C
r
2
(
S
O
4
)
3
+
H
2
O
With water the reaction is not a redox reaction,
S
O
2
+
H
2
O
⟶
H
2
S
O
3
2
M
g
+
S
O
2
⟶
2
M
g
O
+
S
3
M
g
+
S
O
2
⟶
2
M
g
O
+
M
g
S