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Tardigrade
Question
Chemistry
Which of the following explanation is correct about the given below reaction? Cr 2 O 72-+ H 2 O arrow 2 CrO 42-+2 H +
Q. Which of the following explanation is correct about the given below reaction?
C
r
2
O
7
2
−
+
H
2
O
→
2
C
r
O
4
2
−
+
2
H
+
22
97
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A
C
r
is reduced
B
C
r
is oxidised
C
Oxidation number of
C
r
has neither decreased nor increased
D
Hydrogen is reduced
Solution:
The oxidation number of
C
r
in
C
r
2
O
7
2
−
and
C
r
O
4
2
−
is same, i.e. 6. Thus, oxidation of
C
r
has neither decreased nor increased.