(i) The compound told in this passage is hydrogen peroxide (H2O2). It can act both as oxidising and reducing agent in acidic and alkaline media. H2O2 is important for use in the pollution control treatment of domestic and industrial effluents.
(ii) H2O2 may undergo decomposition into H2Oif it is placed in contact with sunlight or with dust particles. So it is kept in wax lined coloured bottles.
Another measure taken to prevent dissociation is by adding small amounts of negative catalyst like urea, glycerol, etc.
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