Lead oxide

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Lead oxide may refer to:

Lead(II) oxide, PbO, litharge, massicot
Lead(II,II,IV) oxide, Pb₃O₄, minium, red lead
Lead dioxide (lead(IV) oxide), PbO₂

Less common lead oxides are:

Lead(II,IV) oxide, Pb₂O₃, lead sesquioxide
Pb₁₂O₁₉ (monoclinic, dark-brown or black crystals)
The so-called black lead oxide, which is a mixture of PbO and fine-powdered metal Pb and used in the production of lead acid batteries.

The sequence of the thermal transformation between the oxides in air (starting from PbO₂) is as follows^[1]:

$PbO_2 \stackrel{\rm 293 \,^{\circ}\mathrm{C}} {\longrightarrow} Pb_{12} O_{19} \stackrel{\rm 351 \,^{\circ}\mathrm{C}} {\longrightarrow} Pb_{12} O_{17} \stackrel{\rm 374 \,^{\circ}\mathrm{C}} {\longrightarrow} Pb_3 O_4 \stackrel{\rm 605 \,^{\circ}\mathrm{C}} {\longrightarrow} PbO$

[edit] References

^ N.N. Greenwood, A. Earnshaw, "Chemistry of Elements", 2nd edition, Butterworth-Heinemann, 1997.

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Lead oxide

From Wikipedia, the free encyclopedia

[edit] References

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