Tl2SO4 - THALLIUM (I) SULPHATE

Properties of thallium (I) sulphate:

White, volatile (above the melting temperature), thermally stable. Moderately soluble in cold water (hydrolysis isn't present), better - in hot water. Does not form crystalline hydrates. Poorly soluble in dilute sulfuric acid. Decomposed by concentrated acids. Participates in exchange reactions.


Molar mass g/mol 504.83
Density g/cm3 6.765
Melting point °C 632

Methods for preparation of thallium (I) sulphate:

2Tl + H2SO4(diluted, cold) = Tl2SO4↓ + H2↑.

Tl2S + 2O2 = Tl2SO4 (250° C).


Chemical reactions with thallium (I) sulphate:

Tl2SO4(diluted) + 2(n)H2O = 2[Tl(H2O)(n)](+) + SO4(2-) (pH = 7).

Tl2SO4 + 2HCl(conc.) = 2TlCl↓ + H2SO4.

Tl2SO4 + H2SO4(conc.) = 2TlHSO4 (20-40° C).

Tl2SO4 + Ba(OH)2 = 2TlOH + BaSO4↓.

2Tl2SO4 + 2H2 = Electrolysis = 4Tl↓(cathode) + O2↑(anode) + 2H2SO4.


 

Did you know?

Water expands by about 9% as it freezes.