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Byju's Answer
Standard XII
Chemistry
Preparations and Reactions of Sodium Oxide
Complete the ...
Question
Complete the following equation:
N
a
2
O
2
+
2
H
2
O
→
(
W
–
–
–
)
+
H
2
O
2
2
K
O
2
+
2
H
2
O
→
(
X
–
–
)
+
(
Y
–
–
)
+
O
2
N
a
2
O
+
C
O
2
→
(
Z
–
–
)
A
W
−
4
N
a
,
X
−
K
2
O
,
Y
−
H
2
O
,
Z
−
N
a
2
O
2
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B
W
−
4
N
a
,
X
−
K
2
O
,
Y
−
H
2
O
2
,
Z
−
N
a
2
C
O
3
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C
W
−
4
N
a
O
H
,
X
−
2
K
O
H
,
Y
−
H
2
O
,
Z
−
N
a
2
O
3
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D
W
−
2
N
a
O
H
,
X
−
2
K
O
H
,
Y
−
H
2
O
2
,
Z
−
N
a
2
C
O
3
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Solution
The correct option is
D
W
−
2
N
a
O
H
,
X
−
2
K
O
H
,
Y
−
H
2
O
2
,
Z
−
N
a
2
C
O
3
N
a
2
O
2
+
2
H
2
O
→
2
N
a
O
H
(
w
)
+
H
2
O
2
2
K
O
2
+
2
H
2
O
→
2
K
O
H
(
x
)
+
H
2
O
2
(
y
)
+
O
2
N
a
2
O
+
C
O
2
→
N
a
2
C
O
3
(Z)
Thus,
W
=
N
a
O
H
,
X
=
K
O
H
Y
=
H
2
O
2
,
Z
=
N
a
2
C
O
3
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1
Similar questions
Q.
H
g
(
N
O
3
)
2
Δ
−
→
W
+
X
+
O
2
X
+
H
2
O
⟶
H
N
O
2
+
H
N
O
3
W
+
H
N
O
3
⟶
Y
+
N
O
+
H
2
O
Y
+
N
a
2
S
2
O
3
(
e
x
c
e
s
s
)
⟶
Z
+
N
a
N
O
3
Find
W
,
X
,
Y
and
Z
Q.
A
g
N
O
3
Δ
−
→
(
W
)
+
(
X
)
+
O
2
(
X
)
+
H
2
O
⟶
H
N
O
2
+
H
N
O
3
(
W
)
+
H
N
O
3
⟶
Y
+
N
O
+
H
2
O
(
Y
)
+
N
a
2
S
2
O
3
(
excess
)
⟶
Z
+
N
a
N
O
3
Identify
(
W
)
to
(
Z
)
:
Q.
Identify W, X, Y, and Z respectively in the given reactions.
C
a
C
O
3
△
→
W
+
X
W
+
H
2
O
→
Y
Y
+
Z
→
N
a
O
H
+
C
a
C
O
3
Q.
Consider a reaction sequence as follows:
F
e
C
r
2
O
4
+
N
a
2
C
O
3
+
O
2
F
u
s
i
o
n
−
−−−
→
[
X
]
H
+
−
−
→
H
2
O
[
Y
]
H
+
−
−
→
H
2
O
2
[
Z
]
Which of the following statements is true for the compounds [X], [Y] and [Z]?
Q.
x + y + z + w = 2
x − 2y + 2z + 2w = − 6
2x + y − 2z + 2w = − 5
3x − y + 3z − 3w = − 3
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