Balance each of the following skeletal equations by using oxidation and reduction half-reactions. All the reactions take place in basic solution. Identify the oxidizing agent and reducing agent in each reaction.

Transcribed Image Text:

(a) Reaction of ozone with bromide ions: O₂ (aq) + Br (aq) → O₂(g) + BrO₂ (aq) (disproportionation) in aque- (b) Reaction of bromine with itself ous solution: Br₂ (1) →BrO₂ (aq)+ Br(aq) (c) Formation of chromate ions from chromium(III) ions: Cr³+ (aq) + MnO₂ (s) Mn²+ (aq) + CrO2 (aq) (d) Formation of phosphine, PH3, a poisonous gas with the odor of decaying fish: P4(S) H₂PO₂ (aq) + PH3 (aq)