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Byju's Answer
Standard XII
Chemistry
Potassium Dichromate
Mn2+ can be o...
Question
M
n
2
+
can be oxidised to
M
n
O
−
4
by_____.
A
S
n
O
2
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B
P
b
O
2
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C
B
a
O
2
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D
none of these
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Solution
The correct option is
C
P
b
O
2
M
n
2
+
+
5
P
b
O
2
+
4
H
+
→
2
M
n
O
−
4
+
5
P
b
2
+
+
2
H
2
O
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0
Similar questions
Q.
Complete and balance the following reactions:
M
n
2
+
+
P
b
O
2
⟶
M
n
O
−
4
+
H
2
O
Q.
If the
H
+
concentration is decreased from
1
M
to
10
−
4
M
at
25
o
C
for the couple
M
n
O
4
−
/
M
n
2
+
, then the oxidising power of the
M
n
O
4
−
/
M
n
2
+
couple decreases by :
Q.
If the
H
+
concentration decreased from 1 M to
10
−
4
M at
25
o
C
for the couple
M
n
O
−
4
/
M
n
2
+
, then the oxidising power of the
M
n
O
−
4
/
M
n
2
+
couple decreases by
Q.
Calculate the mass (m) of oxalic acid
(
H
2
C
2
O
4
)
which can be oxidised to
C
O
2
by
100
mL of an
M
n
O
4
−
solution,
10
mL of which is capable of oxidising
50.0
mL of
1.00
N
I
−
to
I
2
.
M
n
O
4
+
8
H
+
+
5
e
−
→
M
n
2
+
+
4
H
2
O
H
2
C
2
O
4
→
2
C
O
2
+
2
H
+
+
2
e
−
2
I
−
→
I
2
+
2
e
−
What is the value of
10
m
?
Q.
M
n
O
4
−
oxidises
M
n
2
+
to
M
n
O
2
and itself reduces to
x
in the titration method. How many oxygen atoms does
x
contain?
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