Explain why hydrogen peroxide cannot be stored for prolonged periods.
Hydrogen peroxide contains the weak peroxide (– O – O –) linkage. As a result, it is an unstable compound and decomposes easily into water and oxygen.
This process is further catalysed by the traces of metal impurities (Pt, Ag, Co, Fe, Cu, MnO2 etc.), dust particles, strong bases, rough surfaces and exposure to light. Thus, it cannot be stored for prolonged periods.