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Byju's Answer
Standard X
Chemistry
Precipitation Reaction
If CO2 gas ...
Question
If
C
O
2
gas is passed into
a
q
.
N
a
2
C
r
O
4
yellow solution
:
A
a
q
.
N
a
2
C
r
O
7
(
o
r
a
n
g
e
)
solution is formed
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B
a
q
.
C
r
2
(
C
O
3
)
2
is formed
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C
C
r
(
O
H
)
3
is precipitated
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D
no action
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Solution
The correct option is
C
a
q
.
N
a
2
C
r
O
7
(
o
r
a
n
g
e
)
solution is formed
Reaction:
N
a
2
C
r
O
4
+
H
2
O
+
C
O
2
→
N
a
2
C
r
2
O
7
+
N
a
H
C
O
3
orange
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Similar questions
Q.
If
C
O
2
gas is passed into
a
q
.
N
a
2
C
r
O
4
yellow solution, then _____________ .
Q.
A green solution of potassium manganate (VI) turns purple and a brown solid is precipitated, when
C
O
2
gas is bubbled through the solution.
The above change is observed when
C
O
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C
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Q.
Assertion :Baryta water becomes turbid on passing
C
O
2
gas through it but turbidity becomes clear on passing more
C
O
2
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Q.
If
C
O
2
(g) under pressure is passed into
N
a
2
C
r
O
4
(aq), yellow colour solution changes to another coloured solution. What is it ?
Q.
When
H
2
S
gas is passed through a hot acidic aqueous solution containing
C
r
3
+
,
C
d
2
+
,
H
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2
+
a
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d
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o
2
+
,
a precipitate is formed which does not consist of :
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