Silver sulfate
Encyclopedia
Silver sulfate is an ion
ic compound of silver
used in silver plating and as a non-staining substitute to silver nitrate
. This sulfate
is stable under ordinary conditions of use and storage, though it darkens upon exposure to air or light. It is minimally soluble in water.
to a solution of silver nitrate
:
The precipitate is then washed with hot water and preparation is under ruby red illumination.
to silver(II) fluoride
(HF
escapes). It is a black solid that decomposes exothermally at 120°C with evolution of oxygen and the formation of the pyrosulfate
.
Ion
An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge. The name was given by physicist Michael Faraday for the substances that allow a current to pass between electrodes in a...
ic compound of silver
Silver
Silver is a metallic chemical element with the chemical symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal...
used in silver plating and as a non-staining substitute to silver nitrate
Silver nitrate
Silver nitrate is an inorganic compound with chemical formula . This compound 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...
. This sulfate
Sulfate
In inorganic chemistry, a sulfate is a salt of sulfuric acid.-Chemical properties:...
is stable under ordinary conditions of use and storage, though it darkens upon exposure to air or light. It is minimally soluble in water.
Preparation
Silver sulfate is prepared by adding sulfuric acidSulfuric acid
Sulfuric acid is a strong mineral acid with the molecular formula . Its historical name is oil of vitriol. Pure sulfuric acid is a highly corrosive, colorless, viscous liquid. The salts of sulfuric acid are called sulfates...
to a solution of silver nitrate
Silver nitrate
Silver nitrate is an inorganic compound with chemical formula . This compound 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...
:
- 2 Ag+(aq) + SO42-(aq) → Ag2SO4 (s)
The precipitate is then washed with hot water and preparation is under ruby red illumination.
Silver(II) sulfate
The synthesis of silver(II) sulfate (AgSO4) with a divalent silver ion instead of a monovalent silver ion was first reported in 2010 by adding sulfuric acidSulfuric acid
Sulfuric acid is a strong mineral acid with the molecular formula . Its historical name is oil of vitriol. Pure sulfuric acid is a highly corrosive, colorless, viscous liquid. The salts of sulfuric acid are called sulfates...
to silver(II) fluoride
Silver(II) fluoride
Silver fluoride is a chemical compound with the formula AgF2. It is a rare example of a silver compound. Silver is usually present in its +1 oxidation state. It is used as a fluorinating agent.-Preparation:...
(HF
Hydrogen fluoride
Hydrogen fluoride is a chemical compound with the formula HF. This colorless gas is the principal industrial source of fluorine, often in the aqueous form as hydrofluoric acid, and thus is the precursor to many important compounds including pharmaceuticals and polymers . HF is widely used in the...
escapes). It is a black solid that decomposes exothermally at 120°C with evolution of oxygen and the formation of the pyrosulfate
Pyrosulfate
In chemistry, disulfate or pyrosulfate is the anion with the molecular formula [S2O7]2−. 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....
.