Byju's Answer
Standard XII
Chemistry
Potassium Dichromate
The equilibri...
Question
The equilibrium :
C
r
2
O
2
−
7
→
←
2
C
r
O
2
−
4
exists in
A
Acidic Medium
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B
Basic Medium
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C
Neutral Medium
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D
Does not exist
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Solution
The correct option is
B
Basic Medium
C
r
2
O
7
B
a
s
i
c
−
−−−
→
A
c
i
d
i
c
←
−−−
−
2
C
r
O
2
−
4
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1
Similar questions
Q.
The equilibrium :
C
r
2
O
2
−
7
→
←
2
C
r
O
2
−
4
exists in
Q.
The reaction
A
g
2
O
+
H
2
O
2
→
2
A
g
+
H
2
O
+
O
2
takes place in
Q.
H
2
O
2
when reacts with
M
n
S
O
4
acts as an oxidising agent in :
Q.
Assertion :In acidic medium,
K
2
C
r
2
O
7
exists as
C
r
2
O
2
−
7
(orange) while in basic medium it is converted to
C
r
O
2
−
4
(yellow). Reason:
K
2
C
r
2
O
7
is hygroscopic in nature and changes colour on reaction with water.
Q.
C
13
H
10
O
C
F
3
C
O
3
H
−
−−−−−
→
(
A
)
H
3
O
+
−
−−
→
B
+
C
With neutral
F
e
C
l
3
,
C
gives violet colour. B on decarboxylation and C on reduction with zinc dust, gives same compound. The correct statement is:
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