Mercury(I) sulfate

Mercury(I) sulfate
IUPAC name Mercury(I) sulfate
Other names Mercurous sulfate
Identifiers
CAS number	7783-36-0
Properties
Molecular formula	Hg2SO4
Molar mass	497.24 g/mol
Appearance	whitish-yellow crystals
Density	7.56 g/cm3
Solubility in water	0.051 g/100 mL
Solubility	soluble in dilute nitric acid[1]
Thermochemistry
Std enthalpy of formation ΔfHo298	-743.1 kJ·mol-1
Standard molar entropy So298	200.7 J·mol-1·K-1
Specific heat capacity, C	132 J·mol-1·K-1[2]
Related compounds
Other anions	Mercury(I) fluoride Mercury(I) chloride Mercury(I) bromide Mercury(I) iodide
Other cations	Mercury(II) sulfate Cadmium sulfate Thallium(I) sulfate
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Mercury(I) sulfate, commonly called mercurous sulfate (US) or mercurous sulphate (UK) is the chemical compound Hg₂SO₄.^[3] It can be produced by a reaction of mercury(I) nitrate with a source of sulfate ions^[4]:

Hg₂(NO₃)₂ + SO₄^2- → Hg₂SO₄ + 2 NO₃^-

It can also be prepared by reacting an excess of mercury with concentrated sulfuric acid^[4]:

2 Hg + 2 H₂SO₄ → Hg₂SO₄ + 2 H₂O + SO₂

References

1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–69, ISBN 0-8493-0594-2 
2. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 5–19, ISBN 0-8493-0594-2 
3. ^ Intermediate Inorganic Chemistry by J. W. Mellor, published by Longmans, Green and Company, London, 1941, page 388
4. ^ ^{a b} Google Books result, accessed 11 December 2010