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Chemistry
Chemistry
Problem
Combine the two half-reactions below to obtain the balanced overall equation in acidic solution. (i)
F
e
2
+
→
F
e
3
+
+
e
−
Fe^{2+} \rightarrow Fe^{3+} + e^{-}
F
e
2
+
→
F
e
3
+
+
e
−
(ii)
C
r
2
O
7
2
−
+
14
H
+
+
6
e
−
→
2
C
r
3
+
+
7
H
2
O
Cr_{2}O_{7}^{2-} + 14H^{+} + 6e^{-} \rightarrow 2Cr^{3+} + 7H_{2}O
C
r
2
O
7
2
−
+
14
H
+
+
6
e
−
→
2
C
r
3
+
+
7
H
2
O
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