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AP EAMCET Engineering 20 Apr 2019 Shift 1 Paper
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Section:
Chemistry
© examsiri.com
Question :
151 of 160
Marks:
+1
,
-0
K
M
n
O
4
oxidises
S
2
O
3
−
2
to
S
O
4
2
−
in medium x and
N
O
2
−
to
N
O
3
−
in medium y. x and y are respectively.
acidic, basic
acidic, acidic
acidic, neutral
neutral, acidic
Validate
Solution:
The chemical reaction in neutral solution is given as follows
8
M
n
O
4
−
+
3
S
2
O
3
−
2
+
H
2
O
→
8
M
N
O
2
+
6
S
O
4
2
−
+
2
O
H
In acidic medium the reaction is,
2
M
n
O
4
−
+
5
N
O
2
−
+
6
H
+
→
2
M
n
+
2
+
5
N
O
3
−
+
3
H
2
O
Therefore, option (4) is correct
© examsiri.com
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