The only acids which he mentions are the acetic, sulphuric, nitric, muriatic, and aqua regia.
Sometimes they have a solution of silver in nitric acid, or of gold in aqua regia, or an amalgam of gold or silver, which being adroitly introduced, furnishes the requisite quantity of metal.
But sulphur is easily converted into sulphuric acid by the action of aqua regia, and of course it disappears or dissolves.
Wollaston, about a year after, in a paper read to the Royal Society, acknowledged himself to have been the discoverer of palladium, and related the process by which he had obtained it from the solution of crude platina in aqua regia.
Muriatic acid effervesced with it, when assisted by heat, and the elastic fluid that passed off had a yellowish colour, and the smell of aqua regia.
This salt is prepared by precipitating a solution of gold in aqua regia by ammonia, and then introducing the well-washed precipitate into a boiling solution of potassium cyanide.
The separation of gold from silver in the wet way may be effected by nitric acid, sulphuric acid or by a mixture of sulphuric acid and aqua regia.
Orfila either dissolves the matter in aqua regia, and passes a stream of chlorine through the liquid, or he carbonises it by means of concentrated sulphuric acid, in close vessels.
Sixty grains of fine gold and 12 of rose copper are to be dissolved in two ounces of aqua regia.
The gold powder may be obtained, either by precipitating gold from its solution in aqua regia by a solution of pure sulphate of iron, or by evaporating away the mercury from some gold amalgam.
It will appear later, from the method of manufacture, that hydrochloric, nitric, and sulphuric acids and aqua regia were more or less all produced and all included in this term.
The terms aqua fortis and aqua regia had come into use prior to Agricola, but he does not use them; the Alchemists used various terms, often aqua dissolvia.
The third might yield nitric, and the fourth aqua regia.
Manufacture of nitric acid and aqua regia Prior to 1400 A.
This cause we shall easily find by attending to the different manners in which the Marine Acid, when alone and in aqua regia, operates on the reguline part of Antimony.
Aqua regia was the Acid which succeeded best with Mr. Geoffroy.
The Vitriolic Acid poured upon Mother of Nitre causes many Acid vapours to rise, which are a compound of the Nitrous and Marine Acids, that is, an Aqua Regia.
Next dissolve, in a separate vessel, fine pewter in aqua regia, and when it is well impregnated, add an equal quantity of distilled water.
Dissolve zaffre, in powder, in aqua regia, for twenty-four hours.
Put as much gold in as small a quantity of aqua regia as will dissolve it, and dilute it with two or three times the quantity of distilled water.
Aqua regia is the only acid which dissolves it, and the action is much slower than with Au.
No other acid except nitro-hydrochloric will dissolve Au or Pt; hence the ancients called it aqua regia, or king of liquids.
PtCl4 is made by dissolving Pt in aqua regia, and evaporating the liquid.
Either chlorine water or aqua regia may be employed for this purpose instead of gaseous chlorine.
If paper soaked with a solution of platinum (in aqua regia) and sal ammoniac be burnt, then the ash obtained contains very finely-divided platinum, and in this form it is best fitted for igniting hydrogen and detonating gas.
Aqua regia is a mixture of 1 part of nitric acid with 2 to 3 parts of hydrochloric acid.
Platina is precipitated from a solution in aqua regia by sal-ammoniac, as gold is by martial vitriol.
This metal is not affected by exposure to the air, or by any simple acid, though concentrated and hot; but it is dissolved by dephlogisticated marine acid, and by aqua regia, in which a little nitrous air is procured.
Neither this acid nor the nitrous will dissolve gold or platina; but a mixture of them, called aqua regia, will do it.
It is soluble in nitro-hydrochloric acid (aqua regia).
The double chloride is fused with nitre, the melt extracted with water and the residue fused with lead, the excess of lead being finally removed by solution in nitric acid and aqua regia.
Iridium tetrachloride, IrCl4, is obtained by dissolving the finely divided metal in aqua regia; by dissolving the hydroxide in hydrochloric acid; and by digesting the hydrated sesquichloride with nitric acid.
Smithson Tennant during the examination of the residue left when platinum ores are dissolved in aqua regia; the element occurs in platinum ores in the form of alloys of platinum and iridium, and of osmium and iridium.
The iridium is then precipitated from the solution (as oxide) by the addition of baryta, dissolved in aqua regia, and precipitated as iridium ammonium chloride by the addition of ammonium chloride.
Thus, put in aqua regia the gold will dissolve, but in the atmosphere it retains its brilliant color, and in the photographer's solution its energies have still a different mode of manifestation.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "aqua regia" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
