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Transition metals (A-level only)
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Question 11
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Which reaction does not involve a change in the oxidation state of the transition metal?
A
MnO4−+5Fe2++8H+→Mn2++5Fe3++4H2O \text{MnO}_4^- + 5\text{Fe}^{2+} + 8\text{H}^+ \rightarrow \text{Mn}^{2+} + 5\text{Fe}^{3+} + 4\text{H}_2\text{O}
MnO
4
−
+
5
Fe
2
+
+
8
H
+
→
Mn
2
+
+
5
Fe
3
+
+
4
H
2
O
B
2VO2++Zn+4H+→2VO2++Zn2++2H2O 2\text{VO}_2^+ + \text{Zn} + 4\text{H}^+ \rightarrow 2\text{VO}^{2+} + \text{Zn}^{2+} + 2\text{H}_2\text{O}
2
VO
2
+
+
Zn
+
4
H
+
→
2
VO
2
+
+
Zn
2
+
+
2
H
2
O
C
[Co(H2O)6]2++4Cl−→[CoCl4]2−+6H2O [\text{Co}(\text{H}_2\text{O})_6]^{2+} + 4\text{Cl}^- \rightarrow [\text{CoCl}_4]^{2-} + 6\text{H}_2\text{O}
[
Co
(
H
2
O
)
6
]
2
+
+
4
Cl
−
→
[
CoCl
4
]
2
−
+
6
H
2
O
D
2Fe3++2I−→2Fe2++I2 2\text{Fe}^{3+} + 2\text{I}^- \rightarrow 2\text{Fe}^{2+} + \text{I}_2
2
Fe
3
+
+
2
I
−
→
2
Fe
2
+
+
I
2
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Transition metals (A-level only) Questions
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Chemistry
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Transition metals (A-level only)
