- (A) The reaction described is a single replacement reaction in which
bromine reacts with sodium iodide to produce sodium bromide and iodine.
Br 2 (ℓ) + 2NaI(aq) → 2NaBr(aq) + I 2 (aq)The bromine is being reduced from 0 to −1. The iodine is being
oxidized from −1 to 0 while the oxidation state of the sodium isn’t
changing.