General Chemistry
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How do oxidation numbers of each element of the following reactions change?
1. Ag(s) + CN-(aq) + O2(g) → Ag(CN)2-(aq) + H2O(l)
2. NaI(aq) + 3HOCl(aq) → NaIO3(aq) + 3HCl(aq).
1.
Ag: 0 → –1
O: +1 → –2
C: +4 → –1
N: no change
2.
I: +1 → +5
O: +2 → –2
Cl: +1 → –1
Na and H: no change
O: 0 → –2
C and N: no change
Na: 0 → +1
H and O: no change
Na, H, and O: no change