Application of chemical knowledge (2018 VCE)

1) Hydrogen peroxide, H2O2, in aqueous solution at room temperature decomposes slowly and irreversibly to form water, H2O, and oxygen, O2, according to the following equation.
2H2O2(aq) → 2H2O(l) + O2(g) ΔH < 0



Propose a method to determine how quickly a solution of H2O2 decomposes when stored at a particular temperature.