Tl2O - THALLIUM (I) OXIDE

Properties of thallium (I) oxide:

From dark brown - to black, the volatile in vacuum. On the air is partially oxidized. Shows basic properties. It reacts with water (is formed alkali solution) and acids. It is recovering by hydrogen and carbon monoxide; is completely oxidized by oxygen under mild heat.


Molar mass g/mol 424.77
Density g/cm3 9.52
Melting point °C 303
Boiling point °C 1100

Methods for preparation of thallium (I) oxide:

Tl2O3 = Tl2O + O2 (500-1000° C).

Tl2O3 + 2H2 = Tl2O + 2H2O (150-185° C).

2TlOH = TlO2 + H2O (above 125° C).

2(TlOH • 2H2O) = Tl2O + 5H2O (140° C).

Tl2CO3 = Tl2O + CO2 (300-600° C).

4TlNO3 = 2Tl2O + 4NO2 + O2 (above 500° C).


Chemical reactions with thallium (I) oxide:

Tl2O (solid) = Tl2O(gas) = Tl + O2 (above 1300° C).

Tl2O + H2O = 2TlOH.

Tl2O + 2HCl (diluted) = 2TlCl↓ + H2O, Tl2O + 2HNO3 = 2TlNO3 + H2O.

Tl2O + H2 = 2Tl + H2O (above 500° C),

Tl2O + CO = 2Tl + CO2 (250-325° C).

Tl2O + O2 = Tl2O3 (to 200° C).


 

Did you know?

Our tooth enamel is also the most mineralized chemical in our body, and is made up of hydroxyapatite.