It is separated from baryta by dissolving in a little hydrochloric acid, adding ammonia in excess, and then acidifying with acetic acid, and precipitating the baryta with potassium bichromate, as described under Baryta.
In determining the baryta in minerals which are soluble in acid, it is precipitated direct from the hydrochloric acid solution (nearly neutralised with ammonia) by means of sulphuric acid.
A correction must be made to counteract the effect of impurities in the baryta as well as errors inherent in the process.
Five grams of the substance are taken, and the baryta they contain converted into carbonate (if necessary).
It is then cooled, and weighed as sulphate of baryta (BaSO{4}).
Chromate of barytais then thrown down, by the addition of bichromate of potash, as a yellow precipitate.
Baryta is got into solution in the manner described under Lime; but in the case of the sulphate the substance is fused with three or four times its weight of "fusion mixture.
In the absence of baryta or lime it is filtered off, and weighed as strontium carbonate, which contains 70.
On evaporating to dryness, however, and redissolving, the nitrate of baryta became effective, and enabled me to estimate the sulphuric acid generated; which was of course 10 for every 4 of the sulphur.
After throwing down the solution of the mixed salts by nitrate of silver, Berzelius digests the washed precipitate in a closed bottle of water of baryta; whence results bromate of baryta without any chloride of barium.
The solution of bromate of barytamay also be neutralized by nitric acid, and the bromic acid may be precipitated by nitrate of silver.
This solution lets fall abundant columnar crystals of hydrate of baryta as it cools; but it still retains one twentieth its weight of baryta, and is called baryta water.
The excess of baryta being thrown down by carbonic acid, and the liquid being evaporated, a bromate of baryta is obtained, which may be washed with alcohol of 0.
It is readily distinguished from baryta, by its inferior solubility, and by its soluble salts giving a red tinge to flame, while those of baryta give a yellow tinge.
It is decomposed by calcination in contact with charcoal at a white heat, into sulphuret of baryta; from which all the baryta salts may be readily formed.
It is contended that the cost of baryta is 10 cents per ton beets worked.
Pontin, succeeded in decomposingbaryta and lime, by negatively electrising mercury in contact with them, and that, by such means, he had actually obtained amalgams of the earths in question.
He says--"This experiment was made in contact with the atmosphere, in which carbonic acid is always present; and carbonate of potash and sulphate of baryta mutually decompose each other.
Sulphate of barytais absolutely insoluble in solution of citric acid, whilst sulphate of lime is not; and the presence of the latter impedes the crystallisation of the acid.
To obtain the gum in a still whiter state, carbonate of baryta is added, and after agitation the mixture is filtered; it is afterwards shaken with gelatinous alumina, again filtered, and evaporated.
When both are used, the nitre, I should think, would start, and the nitrate of baryta continue and finish the combustion of the powder.
The gas evolved in the last, passed into lime water and baryta water, occasions white precipitates, which redissolve in acids with effervescence, and after the solution has been boiled are not reprecipitated by liquor of ammonia.
Defn: An earth of a white color resembling lime in appearance, and baryta in many of its properties.
Defn: A poisonous organic base (a ptomaine) formed in the decomposition of protagon with boiling baryta water, and in the putrefraction of proteid matter.
The sulphate of baryta colors the flame green when heated at the point of the reduction flame.
The hydrate of lime is far less soluble in water than either those of baryta or strontia, and is less soluble in hot water than in cold.
This is what distinguishes lime from barytaand strontia, and is a good method of separating the former from the latter.
In the pure state, baryta is of a greyish-white color, presents an earthy appearance, and is easily powdered.
By exposing baryta or its compounds upon a platinum wire, or a splinter of the substance held with the platinum tongs, to the point of the blue flame, a pale apple-green color is communicated to the external flame.
The hydrate of baryta melts by a low red heat without losing its water of hydration.
When alcohol is poured over baryta or its salts, and inflamed, a feeble green color is communicated to the flame, but this color should not be considered a characteristic of the salt.
Baryta and its compounds fuse when exposed to ignition in the oxidizing flame.
It is obtained by treating a solution of permanganate of baryta with sulphuric acid, when sulphate of baryta falls, and the permanganic acid remains dissolved in the water.
Finally, Mr. Wolpert rightly sees one serious drawback to the use of baryta in an apparatus that has to be employed in schools, among children, and that is that this substance is poisonous.
This gentleman therefore replaces the solution of baryta by water saturated with lime, which costs almost nothing, and the preparation of which is exceedingly simple.
Carbonic acid readily betrays its presence through solutions of the alkaline earths such as baryta and chalk, in which its passage produces an insoluble carbonate, and consequently makes the liquid turbid.
It may be readily recognized by the white precipitate which it forms when passed through lime or baryta water.
Dumas obtained barium methyl carbonate by the action of carbon dioxide onbaryta dissolved in methyl alcohol (Ann.
Let the nitrate of baryta be well dried and powdered; then add to it the other ingredients, all finely pulverized, and exceedingly well mixed and rubbed together.
From the weight of the sulphate of baryta is then computed the weight of sulphate of lime, which has passed over into solution.
The yields of furfuraldehyde would appear to have no definite relation to the other chemical data about a gum, such as the potash and baryta absorptions or the sugar produced on inversion.
By adding chloride of barium solution the sulphuric acid is bound to the barytes and sulphate of barytaseparates as white precipitate.
The combustion took place in a bell jar filled with pure air, and after being thoroughly washed the gases were passed through baryta water.
On now connecting the barytawater bulbs no precipitate was formed.
In two instances the carbon dioxide was weighed directly by replacing the wash bottle containing the baryta water by weighed potash bulbs.
The last U tube was connected with the vessel containing the baryta water by means of a mercury joint.
The gas is then passed through water and finally into baryta water where a precipitate is invariably formed.
The baryta water in the first wash bottle remained clear even to the end of the experiment.
About one third of the air in the flask was replaced by pure carbon monoxide, the mixture was allowed to remain several hours in contact with the moist phosphorus and then drawn through the baryta water bulbs.
After all carbon dioxide had been removed from the apparatus the baryta water remained perfectly clear (völlig klar) after the gases had passed through for six hours.
From the second flask the gases were passed through a clear solution of baryta water.
After leaving the flask the gas passed through a solution of baryta water, which was protected from the air by a U tube containing solid KOH.
This table tells us that the affinity of baryta for sulphuric acid is greater than that of strontia for the same acid, that of strontia greater than that of potash, and so on.
The earths were gradually distinguished from each other; lime was recognized as a substance distinct from baryta, baryta as distinct from alumina, etc.
Barium hydroxide is soluble in water, forming a strongly-alkaline solution, Baryta water, which is much used in chemical analysis.
Baryta forms white crystalline salts with acids, which are all poisonous with the exception of barium sulphate.
Boiling with dilute mineral acids, or baryta water, decomposes albumins into carbon dioxide, ammonia and fatty amino- and other acids.
Add barytawater till alkaline, and evaporate to dryness.
Add excess of pure solid baryta and allow to stand until the reaction is again alkaline.
The baryta is a heavy grayish porous substance prepared by carefully igniting the nitrate of barium; and of this each retort having the above dimensions holds about 125 lb.
The air is then forced along the pipe, E, into the small air vessel, F, which acts as a sort of cushion to prevent the baryta in the retorts being disturbed by the pulsation of the pumps.
Illustration: Titrating apparatus] The author also describes the apparatus he employs for storing and titrating with baryta solution.
Each retort is closely packed with baryta in lumps about the size of a walnut.
Brin erected a small producer in Paris, and successfully worked it for nearly three years without finding a renewal of the original charge of baryta once necessary.
They also found that by supplying the air to the baryta under a moderate pressure, its absorption of oxygen was greatly assisted.
Brin, who had studied chemistry under Boussingault, undertook experiments with the view of determining why the baryta lost its power of absorbing oxygen.
Under these conditions, and by carefully purifying the air before use, they found that it became possible to use the baryta an indefinite number of times.
When hydrolysed with baryta water yields hydantoic (glycoluric)acid, H2N.
Through the other opening passes a glass tube bent at an acute angle and connected by a short rubber tube to an adjoining flask, two-thirds filled with decinormal baryta solutions.
They have also studied the splitting up of the alkaloid by means of baryta water, and have obtained an acid which they have named hyoscinic acid, and which melts at about 219° F.
From sulphur or iodine, by decomposing with sulphuric acid and separating this with baryta chloride.
A drop of phenolphthalein is now added, a little water, and the acidity determined by titration with deci-normal baryta solution, and the baryta solution taken calculated as oleic acid.
Dissolve boracic acid and nitrate of baryta in spirits of wine, and supply the Bude lamp with this solution.
It is also open to the analyst to purify it by precipitating with baryta water, the baryta compound being subsequently decomposed by carbon dioxide.
The precipitate was dried up with baryta water, exhausted with boiling alcohol, and curarine precipitated from the alcoholic solution by anhydrous ether.
Further, if the reddened urine is precipitated by excess of milk of lime or baryta water and filtered, the filtrate from the urine reddened by rhubarb is colourless, in that reddened by santonin the colour remains.
If sulphate of baryta is thrown down, thebaryta present must have been a salt, insoluble in water, soluble in acids--probably the carbonate.
The residue in the flask is carefully evaporated to dryness (the excess of baryta having been precipitated by CO{2}), and then extracted by strong alcohol.
This test is not conclusive; it is also necessary to ascertain if the precipitate produced by the addition of a baryta solution (vide: under portion B.
The latter reaction distinguishes baryta from strontia, which is not precipitated by hydrofluosilicic acid.
If an insoluble residue remains upon treating the remainder of the precipitate with dilute hydrochloric acid, it consists of sulphate of baryta and indicates the presence of sulphuric acid.
Particular attention should be given to the search for soda, potassa, lime, baryta and strontia, and the determinative tests subsequently applied according to the indications obtained.
I] Barytaand strontia dissolve in alcohol, but only when they are anhydrous and the alcohol is absolute, which is not the case here.
Nitrate of baryta is then added to a portion of the fluid: in presence of sulphuric acid, a white precipitate, insoluble in acids, is produced.
Should a precipitate of sulphate of lime, sulphate of baryta or sulphate of strontia form, it is separated from the fluid and further examined.
To detect sugar and mannite, the sample is dissolved in acidulated water, and an excess of hydrate of baryta added: a precipitate, consisting of quinine and sulphate of baryta, is produced.
The ammonia is then expelled by boiling the fluid, and a solution of nitrate of baryta added.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "baryta" in a variety of sentences. We hope that you will now be able to make sentences using this word.
