Sulphur dioxide occurs in nature in the gases issuing from volcanoes, and in solution in the water of many springs.
Three general ways may be mentioned for the preparation of sulphur dioxide: 1.
In complete combustion of the sulphur, sulphur dioxide SO{2} is formed, which in solution in water forms sulphuric acid.
The action of hot and strong sulphuric acid is altogether different; it acts as an oxidising agent, and is itself reduced to sulphur dioxide or even to sulphur.
The sulphur and arsenic of such minerals as mispickel and pyrites are oxidised by the hot air and pass off as sulphur dioxide and "white arsenic.
Other well-known and remarkable examples are the catalysis of the combustion of hydrogen and of sulphur dioxide in oxygen by finely-divided platinum.
Sulphur dioxide, recognized by its smell and acid reaction, results from the ignition of certain sulphites, sulphates, or a mixture of a sulphate with a sulphide.
One of the earliest known and technically most important instances of catalysis is that of the oxidation of sulphur dioxide to sulphuric acid by oxygen in the presence of oxides of nitrogen.
Having the characteristic odor of sulphur dioxide, or of hydrogen sulphide, or of other sulphur compounds.
Passing to higher temperatures, FG is the solubility curve of potassium iodide in sulphur dioxide; at G two liquid phases are formed, and the system therefore becomes invariant (cf.
Nencki has shown that alloxan combines with thiourea in alcoholic solution, in the presence of sulphur dioxide to form pseudothiouric acid, C5H6N4SO3.
For the preservation of meat and beer, lime juice and dried fruit, sulphur dioxide (sulphurous acid) and some of the sulphites have long been employed.
A stream of sulphur dioxide gas is passed through a solution of sodium dichromate until reduction is complete.
As the freight on weak solutions is prohibitive, the manufacturer using sulphurous acid is faced with the necessity either of purchasing cylinders of sulphur dioxide liquefied by pressure or making the gas and solution himself.
Hot air is blown into the filtrate, which contains ferrous or calcium chlorides, to expel the excess of sulphur dioxide, and the liquid can then be used again.
Sulphur dioxide is then blown in, and the precipitate is treated with iron, which produces metallic copper, or milk of lime, which produces cuprous oxide.
Sulphur dioxide from a siphon of the liquefied gas and air from a gasholder are passed into the Woulff's bottle A, containing concentrated sulphuric acid; this removes moisture from the gases.
Sulphur dioxide is produced in a row of kilns (A-A) by burning iron pyrites in a carefully regulated current of air.
Sulphur dioxide is a heavy gas which is very readily absorbed in water, and at a temperature of zero C.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "sulphur dioxide" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
