Silver sulfate is the
inorganic compound with the formula Ag
2SO
4. It is a white solid with low solubility in water.
Preparation and structure
Silver sulfate precipitates as a solid when an aqueous solution of
silver nitrate
Silver nitrate is an inorganic compound with chemical formula . It is a versatile precursor to many other silver compounds, such as those used in photography. It is far less sensitive to light than the halides. It was once called ''lunar causti ...
is treated with
sulfuric acid:
:2AgNO
3 + H
2SO
4 → Ag
2SO
4 + 2HNO
3
It is purified by recrystallization from concentrated sulfuric acid, a step that expels traces of nitrate.
Silver sulfate and anhydrous
sodium sulfate adopt the same structure.
Silver(II) sulfate
The synthesis of silver(II) sulfate (AgSO
4) with a divalent silver ion instead of a monovalent silver ion was first reported in 2010
by adding
sulfuric acid to
silver(II) fluoride
Silver(II) fluoride is a chemical compound with the formula AgF2. It is a rare example of a silver(II) compound. Silver usually exists in its +1 oxidation state. It is used as a fluorinating agent.
Preparation
AgF2 can be synthesized by fluori ...
(
HF escapes). It is a black solid that decomposes exothermally at 120 °C with evolution of oxygen and the formation of the
pyrosulfate
In chemistry, disulfate or pyrosulfate is the anion with the molecular formula . Disulfate is the IUPAC name.
It has a dichromate-like structure and can be visualised as two corner-sharing SO4 tetrahedra, with a bridging oxygen atom.
In this a ...
.
AgF
2+H
2SO
4 →AgSO
4 +2HF
References
Silver compounds
Sulfates
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