Sulphate

Structure of the sulphate ion

In chemistry, a sulphate (sulfate US English) is a salt of sulphuric acid. The sulphate ion is a group of atoms with the formula SO₄ and two negative charges. It consists of a central sulphur atom surrounded by four (equivalent) oxygen atoms. It occurs when sulphuric acid loses two hydrogens. If it only loses one, a hydrogen sulphate ion is made.

Sulphate Media

Two models of the sulfate ion.1 with polar covalent bonds only; 2 with an ionic bond
The six main resonance structures of the sulfate ion, SO42−.
Knapsack sprayer used to apply sulfate to vegetables. Valencian Museum of Ethnology.
This figure shows the level of agreement between a climate model driven by five factors and the historical temperature record. The negative component identified as "sulfate" is associated with the aerosol emissions blamed for global dimming.
Proposed tethered balloon to inject aerosols into the stratosphere.

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