sn2+io4 - sn +4 +I balance by oxidation number
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1
Answer:
Sn
(aq)
2+
+IO
4(aq)
−
⟶Sn
(aq)
4+
+I
(aq)
−
1) Separating into half reactions,
Sn
2+
⟶Sn
4+
+2e
−
(oxidation)
+7 −1
8e
−
+IO
4
−
⟶I
−
(Reduction)
2) Balancing the atoms & charge,
Sn
2+
⟶Sn
4+
+2e
−
IO
4
−
+8e
−
+8H
+
⟶I
−
3) Balancing oxygen atoms
Sn
2+
⟶Sn
4+
+2e
−
⟶(1)
IO
4
−
+8e
−
+8H
+
⟶I
−
+4H
2
O⟶(2)
4) Make electron gain equivalent to electron lost.
(Eqn(1)×4)+(Eqn(2)×1)
IO
4
−
+8e
−
+8H
+
⟶I
−
+4H
2
O
4Sn
2+
+IO
4
−
+8H
+
⟶4Sn
4+
+I
−
+4H
2
O
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