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Chemistry
Chemistry
Problem
Which of the following half-reactions represents an oxidation process? a)
C
l
2
+
2
e
−
→
2
C
l
−
\mathrm{Cl_2 + 2\,e^- \;\rightarrow\; 2\,Cl^-}
C
l
2
+
2
e
−
→
2
C
l
−
b)
Z
n
→
Z
n
2
+
+
2
e
−
\mathrm{Zn \;\rightarrow\; Zn^{2+} + 2\,e^-}
Zn
→
Z
n
2
+
+
2
e
−
c)
A
l
3
+
+
3
e
−
→
A
l
\mathrm{Al^{3+} + 3\,e^- \;\rightarrow\; Al}
A
l
3
+
+
3
e
−
→
Al
d)
F
e
3
+
+
e
−
→
F
e
2
+
\mathrm{Fe^{3+} + e^- \;\rightarrow\; Fe^{2+}}
F
e
3
+
+
e
−
→
F
e
2
+
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