Question

How does potassium chlorate give oxygen gas?

Answer 1

Is this not a redox reaction ....?

Explanation:

`KClO_3(s) + Delta stackrel(MnO_2)rarrKCl(s) + 3/2O_2(g)uarr`

`Cl^(VI+)` is reduced to `Cl^(-I)`

Oxide anion is oxidized to dioxygen gas..... These reactions are often catalysed by a little `"manganese(IV+) oxide"` as an oxygen transfer reagent.