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  Inorganic Chemistry

LEAD OXIDE (LITHARGE), PBO :

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It is prepared by heating the nitrate.
                             Δ
2Pb(NO3)2 ———> 2 PbO + 4NO2 + O2

It exist in two varieties yellow form (messicol) and red form (litherage). Yellow form is prepared by gently heating lead in air while fusion yields red form. It is insoluble in water and amphoteric in nature.

 

It dissolves in NaOH to form sod. Plumbite.

PbO + 2NaOH ———> Na2 PbO2 + H2O

 

It can be reduced with various reducing agents (C, H2, CO etc.) to lead.

It is used in paints and varnishes, for making flint glass, for making lead (II) salts and for glazing pottery.

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