Reaction between Sodium hydrochloride and sodium meta-bi sulphate.?

Question

How does sodium metabisulphate neutralize sodium hypochlorite?

Answer 1

I would not expect a neutralization reaction in the sense of a base-acid reaction, rather than a redox one.

HOCl is a very strong oxidizing agent and the oxidizing potential might be strong enough to oxidize the SO2 and the sulfit formed from meta-bisulphate in aqueous solutions to sulfate, while it is reduced to chlorid itself.