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1.Which of the following reactions involves neither oxidation nor reduction?
A) N2 + 3H2 → 2NH3
B) NH4NO2 → N2 + 2H2O
C) Cu + 2Ag+ → Cu2+ + 2Ag
D) 2CrO42- + 2H+ → Cr2O72- + H2O
E) C2H4 + H2 → C2H6
2 Assign oxidation numbers to each atom in nitrous acid.
A) H = +1, N = +5, O = -1
B) H = +1, N = +5, O = -2
C) H = +1, N = +3, O = -1
D) H = +1, N = +3, O = 0
E) H = +1, N = +3, O = -2
3. For the reaction that occurs in a lead storage battery,
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