Preparation and Properties of Hydrogen Peroxide

Preparation. Pour 20 ml of a 5% sulphuric acid solution into a 50-ml flask and cool it to 0 °C. While shaking the contents of the flask during 5-10 min, add about 1 g of barium peroxide in small portions. Filter the obtained hydrogen peroxide solution from the precipitate. Study the properties of hydrogen peroxide. 

The second method often employed for the preparation of peroxo complexes involves the use of the late transition metals76 and exploits the mild acidic properties of hydrogen peroxide, i.e. the reaction is an acid-base exchange (Figure 2.23). 

Preparation, Properties, and Structure of Hydrogen Peroxide. When barium oxide, BaO, is heated to a dull red heat in a stream of air it adds oxygen to form a similar compound, BaO, barium peroxide ... 

Prepare a lead sulphide precipitate by reacting solutions of a lead salt and ammonium sulphide. Treat a small amount of the precipitate, washed with water by decantation, with a hydrogen peroxide solution. Why does the colour of the precipitate change Write the equations of the reactions. What properties does hydrogen peroxide exhibit in this and the preceding reactions ... 

The value of hydrogen peroxide as an oxidising agent for analytical and preparative purposes can easily be realised from the foregoing description of its properties and, indeed, was recognised early in its history.5... 

A characteristic property of the platinum metals consists in tin1 readiness with which they admit of being prepared in the colloidal stale as hydrosols. These latter possess powerful catalytic properties, and their accelerating influence upon the rate of decomposition of aqueous solutions of hydrogen peroxide has been carefully studied. The most, powerful catalyscr is colloidal osmium, followed in order of decreasing activity by platinum, palladium, and iridium.1... 

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