Question

Why is $H_{2}O_{2}$ stored in coloured wax lined bottles in presence of a stabilizer?

Answer 1

Hydrogen peroxide is an unstable compound and on its own decomposes very easily to give water and oxygen.  

2H₂O₂  → 2 H₂O + O₂

Catalysts play an important role in its decomposition. Both positive and negative catalysts should be considered for the decomposition and its prevention.

The positive catalysts like strong bases, presence of sunlight or presence of metals as impurities even though in small quantities can alter the rate of decomposition to a greater extent. This may even lead to explosion.

The rough surface of glass too has this effect which leads to photolytic decomposition.

In order to store hydrogen peroxide this should be prevented. This is possible when negative catalyst like urea, glycerine, acetanilide and phosphoric acid are used which decrease the rate of the decomposition reaction, thereby act as stabilizers.

The wax coating smoothens the rough surface and helps in storage of hydrogen peroxide.

Answer 2

Because that acts as a STEBILIZER...

I HOPE IT IS HELPFUL...☺☺✌☺☺