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JEE Advanced 2019 Paper 1
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© examsnet.com
Question : 24
Total: 54
Fusion of
M
n
O
2
with KOH in presence of
O
2
produces a salt W alkaline solution of W upon electrolytic oxidation yields another salt X. The manganese containing ions present in W and X, respectively are Y and Z correct statement(s) is(are)
In both Y and Z,π-bonding occurs between p-orbitals of oxygen and d-orbitals of manganese
In aqueous acidic solution, Y undergoes disproportionation reaction to give Z and
M
n
O
2
Both Y and Z are coloured and have tetrahedral shape
Y is diamagnetic in nature while Z is paramagnetic
Validate
Solution:
M
n
O
2
+
2
K
O
H
+
K
N
O
3
∆
–
–
–
–
–
–
–
–
>
K
2
M
n
O
4
+
H
2
O
K
2
M
n
O
4
(
w
)
→
K
M
n
O
4
(
X
)
↓
↓
M
n
O
4
2
−
(
Y
)
M
n
O
4
−
(
Z
)
1,2,3 are correct
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