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JEE Main Chemistry Class 12 The D and F Block Elements Part 1 Questions
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© examsnet.com
Question : 25
Total: 100
Consider the following reactions:
N
a
C
l
+
K
2
C
r
2
O
7
+
H
2
S
O
4
(
Conc.
)
→
(
A
)
+
Side products
(A)
+
N
a
O
H
→
(
B
)
+
Side products
(B)
+
H
2
S
O
4
(dilute)
+
H
2
O
2
→
(
C
)
+
Side products
The sum of the total number of atoms in one molecule each of
(
A
)
,
(
B
)
and
(
C
)
is ______.
[NV, Jan. 07, 2020 (II)]
Your Answer:
Validate
Solution:
4
N
a
C
l
+
K
2
C
r
2
O
4
+
3
H
2
S
O
4
(
Conc
.
)
⟶
2
C
r
O
2
C
l
2
(
A
)
+
K
2
S
O
4
+
2
N
a
S
O
4
+
3
H
2
O
C
r
O
2
C
l
2
(
A
)
+
N
a
O
H
⟶
N
a
2
C
r
O
4
(
B
)
+
H
2
O
+
N
a
C
l
N
a
2
C
r
O
4
(
B
)
+
H
2
S
O
4
+
H
2
O
2
(
dilute
)
⟶
C
r
O
5
(
C
)
+
N
a
2
S
O
4
+
H
2
O
The sum of total no. of atoms in one molecules each of
A
,
B
&
C
=
5
+
7
+
6
=
18.0
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