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A colourless, viscous liquid, a highly corrosive, strong acid used in several industrial processes.
A colourless, toxic gas with the characteristic odour of rotten eggs. It occurs in certain mineral waters and spring waters.
A compound ion produced when sulphuric acid releases protons.
An odourless, yellow, solid substance, the 16th most common in the Earth´s crust. One of the best known sulphur compounds is pyrite, also known as ´fool´s...
Sulphur dioxide emission is the main cause of acid rains. It is an intermediate product in the production of sulphuric acid.
One of the oxides of sulphur, forms sulphuric acid with water.
One of the oxoacids of nitrogen. Colourless, moderate acid with a pungent odour, that exists only in aqueous solution.