For Redox reactions, oxidation and reduction both occur in a reaction:
Recall the mnemonics LEO GER.
Which of the following is not an oxidation-reduction reaction?
a. H2 + Br2 → 2 HBr
b. NaCl + AgNO3 → NaNO3 + AgCl
c. 2 Na2S2O3 + I2 → Na2S4O6 + 2 NaI
d. Cl2 + H2O → HCl + HOCl
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