Of these there are two, the protoxide and the sesquioxide; besides an acid compound of cobalt and oxygen, to which the name cobaltic acid has been given.
And, as has been already mentioned, a greater and more rapid yield of protoxide can only be obtained by using a larger proportion of lime.
Any excess, however, of lime over that absolutely required for the peroxidation of the protoxide of manganese must be sedulously avoided, since a superabundance of lime leads to the formation of compounds that are not readily peroxidised.
The quantity required to be blown in is chiefly dependent upon the depth of the oxidizer, and upon the amount of protoxide of manganese contained in a given volume of the charge.
A black, insoluble, neutral powder, obtained by mixing solutions of cobalt and of chloride of lime; or, by heating the protoxide to redness in an open vessel.
This arises from the peroxidation of the iron, to whose protoxide they owe their tint.
Recently precipitated protoxide of manganese dissolves very appreciably in neutral solution of chloride of calcium, its solution therein comporting itself with reagents exactly like solutions of manganese salts.
The subsoil contains also a large quantity of protoxide of iron, a substance frequently found in subsoils containing much organic matter, and to which the air has imperfect access.
Reference has been already made to the bad effects of protoxide of iron, and it would appear that organic matter is sometimes injurious.
It is a very heavy powder, of a fine red colour, decomposed by a strong heat into protoxide of lead, and oxygen gas, which is evolved.
Sulphate of protoxide of iron, 2 parts; reduce it to powder, and dry it in a stove at 104 deg.
An olive-green powder formed by transmitting chlorine over powdered iridium, heated to a dull red, or by digesting the hydratedprotoxide in hydrochloric acid.
This article, so extensively used in dyeing, is a crude mixed acetate of the protoxide and sesquioxide of iron.
The chief oxides of uranium are the protoxide and the sesquioxide, or uranic oxide.
Bicarbonate of protoxide of manganese a trace Sulphate of soda 0.
This solution is used for determining the proportion of protoxide of iron in the following preparations.
The anhydrousprotoxide is of a greyish-black colour.
Sir John Herschel then proceeds to show that whatever be the state of the iron in the double salts in question, its reduction by blue light to the state of protoxide is indicated by many other agents.
When all the non-decomposed oxalate is washed from the proof, a feeble image of oxalate of protoxide of iron, scarcely visible, is left on the paper.
Whatever iron they contain is dissolved from the land and transported in a condition ofprotoxide and some proto salt, such as the carbonate, and the process is facilitated by the presence of carbonic acid in the water.
Now iron occurs in these older rocks asprotoxide and peroxide, the former of which is soluble and the latter insoluble in water.
If the iron-bearing water is confined first in a shallow basin and exposed long to the action of the atmosphere the protoxide of iron absorbs the oxygen and is precipitated as an insoluble red peroxide of iron.
The peroxide, however, by the action of organic matter, such as is held in solution in boggy waters, may be deprived of a portion of its oxygen and converted into protoxide and thus be rendered soluble.
Azote, it is known, forms with oxygen two gases, a protoxide and deutoxide, and the same elements in other proportions form nitric acid.
The protoxideis gray, the antimonious acid, white, and antimonic acid, of a straw colour.
Some relight a taper, provided the wick remain ignited, as oxygen gas, protoxideof azote, and the oxides of chlorine.
Proposed Method of preparing Protoxide of Mercury by precipitation, for Medical Employment.
His words are, "When solution of potash is employed, the several inconveniences attendant upon the use of lime-water are avoided, and a blackish coloured protoxide is obtained without heating the solution.
As it is obviously a desideratum to procure preparations of protoxide of mercury of uniform strength, Mr. EVANS has been led to seek a process, by which to obtain this oxide in a pure state.
Proposed Method for preparing Protoxide of Mercury by precipitation, for Medical Employment.
In regard to the medical efficacy of the protoxide obtained in this way, Mr. EVANS reports the following to be the results obtained by Dr.
Carbon burned in protoxide of nitrogen, or laughing gas, N{2}O, produces about 38 per cent.
When carbonate of lime is brought in contact with sulphate of protoxide of iron, the two bodies mutually decompose, with formation of sulphate of lime (gypsum) and carbonate of protoxide of iron.
When a peat contains sulphate of protoxide of iron, or soluble organic salts of iron, to an injurious extent, these may be converted into other insoluble and innocuous bodies, by a sufficient exposure to the air.
It may be here remarked, that the crenate of protoxide of iron is not unfrequently formed in considerable quantity in peat-bogs, and dissolving in the water of springs gives them a chalybeate character.
In peats containing sulphate of the protoxide of iron, the loss that occurs during ignition is partly due to the escape of sulphuric acid, which is set free by the decomposition of the above mentioned salt of iron.
The crenates of lime, magnesia, and protoxide of iron are soluble, crenates of peroxide of iron and of oxide of manganese are but very slightly soluble; crenate of alumina is insoluble.
In the case of vitriol peats, carbonate of lime is the cheapest and most appropriate means of destroying the noxious sulphate of protoxide of iron, and correcting their deleterious quality.
If more of the peroxide of manganese be added than the carbon or protoxide of iron can reduce, it will tinge the glass of an amethyst colour, as stated in the text.
It consists essentially of silicon, oxygen, iron; or, to speak more correctly, it is a silicate of the protoxide of iron.
The black scales which fly from hot iron when struck by the blacksmith's hammer are protoxide of iron.
How may the protoxideof iron be changed to peroxide?
There is another compound which contains less oxygen than this, and is called the protoxide of iron, which is poisonous to plants.
How would you treat a soil containing protoxide of iron?
Do peroxide and protoxide of iron affect plants in the same way?
The indigo when deoxidized by protoxide of iron being soluble in lime-water, the clear yellow solution is to be poured off, and exposed to the air.
Protoxide salts of tin a rich yellow } Acetate of lead ditto } precipitation.
They consist of silicate of alumina, of lime, protoxide of iron; the red contain some silicate of copper.
It may be regarded as a compound of prussiate of protoxide and prussiate of peroxide of iron; or as a double cyanide of the protoxide and peroxide of iron, as the denomination cyanure ferroso-ferrique denotes.
Protoxide of Copper, or red oxide of Copper: its colour is a deep red, sometimes very lively, especially when bruised.
The solution itself contains along with the oxide of iron, protoxide of manganese, and other oxides, as well as the earths, and the phosphoric and arsenic acids.
The surest and easiest method of procuring protoxide of copper is to boil a solution of equal parts of sugar, and sulphate or rather acetate of copper, in four parts of water.
The deutoxide of manganese exists native in the mineral called Braunite; but it may be procured either by calcining, at a red heat, the proto-nitrate, or by spontaneous oxidizement of the protoxide in the air.
The protoxide is obtained by exposing melted lead to the atmosphere, or, more readily, by expelling the acid from the nitrate of lead by heat in a platinum crucible.
There are two oxides of gold; the first or protoxide is a green powder, which may be obtained by pouring, in the cold, a solution of potash into a solution of the metallic chloride.
This pigment is a peculiar oxide of lead, consisting of two atoms of the protoxide and one of the peroxide; but, as found in commerce, it always contains a little extra protoxide, or yellow massicot.
We have just stated, that protoxide of copper afforded a fine colour when it could be fixed, a result difficult to obtain on account of the fugitive nature of this oxide; slight variations of temperature enabling it to absorb more oxygen.
The protoxide of chlorine, a body destitute of any combustible constituent, at the instant of decomposition evolves light and heat with explosive violence; and its volume becomes one-fifth greater.
It is a protoxide of lead, perhaps formed, in some way, by the galvanic action of the iron shell and the leaden ball, assisted probably by the sea-water.
Experiments further showed that it had not the injurious effect on vegetation which it was feared it would have from the protoxide of iron it contained.
These were deemed necessary, it was thought, by the very insoluble nature of the phosphates in the slag, as well as by the supposed injurious action which would be exerted on plant-life by the protoxide of iron it contained.
As in dissolving in hydrochloric acid and oxidizing with nitric acid the solution ought to be twice tested for protoxide of iron, even although at the first test none can be discovered.
Five cubic centimeters hydrochloric acid are now added, and the solution tested with red prussiate of potash for protoxide of iron, and the boiling continued till near dryness, when all the nitric acid is commonly driven off.
Of the methods of precipitating the compounds of the protoxide and estimating the acid, that of the phosphate is by far the most accurate, titrating with uranium solution; 99.
In slightly acid, neutral, or alkaline solutions on the other hand, protoxide of manganese absorbs oxygen with great avidity and forms with it different compounds, according to the means of oxidation employed.
Hence, the ferridcyanide of potassium is as excellent a test for protoxide of iron as the yellow ferrocyanide is for the sesquioxide.
The orange-yellow precipitate formed by mixing a neutral salt of protoxide of thallium with bichromate of potash, is converted by nitric acid into an orange-red.
It is got by partially decomposing the yellow oxalate of protoxide of iron with red prussiate of potash.
Orange Lead, of a dull orange colour, is an orange protoxide of lead or massicot.
Thallium Orange is produced when bichromate of potash is added to a neutral salt of the protoxide of thallium, as an orange-yellow precipitate.
Schweinfurt Blue, or Reboulleau's Blue, is prepared by fusing together equal weights of ordinary arseniate of protoxide of copper and arseniate of potash, and adding one-fifth its weight of nitre to the fused mass.
Fire-Ochres Slags, volatilized calces of the difficultly fusible metals, as oxyde of or White antimony, Protoxide of Arsenic.
When long agitated in a glass bottle it is convertible into a black acrid powder, obviously protoxide of mercury.
These preparations consisted chiefly of protoxide of lead and lead reduced to powder, and partially oxidized by triturating it with water in a mortar.
This last medicine was used in scruple doses--a proof of its great inertness compared with the protoxide of antimony.
Clay fuses easily with fluor spar; it fuses, also, with twice its weight of protoxide of lead, and with its own weight of sulphate of lime, but with no other proportion tried.
The reason was, that the emetics which he employed were too violent, consisting of antimonial preparations, particularly powder of Algerotti, or an impureprotoxide of antimony.
A very deep yellow, approaching orange, which covered a piece of stucco in the ruins near the monument of Caius Cestius, proved to be protoxide of lead, or massicot, mixed with some red lead.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "protoxide" in a variety of sentences. We hope that you will now be able to make sentences using this word.
