Question

Which chemical reaction is involved in the preparation of oxygen using potassium permanganate? (2 marks)

Answer 1

Oxygen is produced by the decomposition reaction of potassium permanganate. (1 mark)
The reaction takes place as follows:

$2{\mathrm{KMnO}}_4\left(s\right)+\mathrm{heat}\to K_2{\mathrm{MnO}}_4\left(s\right)+{\mathrm{MnO}}_2\left(s\right)+O_2\left(g\right)$(1 mark)