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Question
Chemistry
Sodium nitrite is reacted with H2SO4 to form NaHSO4, HNO3, water and X. Gold is dissolved in aqua-regia to form water, AuCl-4 and Y. X and Y are respectively
Q. Sodium nitrite is reacted with
H
2
S
O
4
to form
N
a
H
S
O
4
,
H
N
O
3
, water and
X
. Gold is dissolved in aqua-regia to form water,
A
u
C
l
4
−
and
Y
.
X
and
Y
are respectively
2709
207
AP EAMCET
AP EAMCET 2019
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A
NO
,
N
O
2
67%
B
N
O
2
,
NO
0%
C
NO
,
NO
33%
D
N
X
2
O
,
NO
0%
Solution:
Sodium nitrite is reacted with
H
2
S
O
4
to form
N
a
H
S
O
4
,
H
N
O
3
, water and
NO
gas
(
X
)
.
Gold is dissolved in aqua-regia to form water,
A
u
C
l
4
−
and
NO gas. Thus, here
X
is
NO
and
Y
is
NO
. Reactions involved are as follows :
Sodium nitrite
N
a
N
O
2
+
H
2
S
O
4
⟶
N
a
H
S
O
4
+
H
N
O
3
+
H
2
O
+
(
X
)
NO
A
u
(
s
)
+
Aqua-regia
H
N
O
3
+
4
H
Cl
⇌
A
u
C
l
4
−
+
(
Y
)
NO
+
H
2
O