The infusoria make use of the lime, silica, and potassa for the same purpose.
The old double iodide says, add iodide of potassa till it does so, and it will do so; but the cyanide of potassa does it much better, and the cyanogen is lost as the paper dries, otherwise it would take no image at all.
In the process I gave it merely requires an equivalent, "and cyanide of potassa is always of use in many of these processes.
That equivalent is of course best arrived at by a solution, as, if the cyanide of potassa were added in the lump, it would be lost or be in excess.
Alkalies, especially Potassa Salts: to resolve calculi, potash and soda to be used.
They have been applied advantageously in the washing of smoke from potassa furnaces, in order to collect the ammonia that escapes from the chimneys.
If the action of the potassa is prolonged the (soft) red woods enter into this group.
Cochineal is turned by thepotassa to a violet-red, orchil to a violet-blue, and alkanet to a decided blue.
If the action of potassa is prolonged, the red-wood shades are decolorized, and a washing with water then bleaches the tissue.
If the action of potassa is prolonged, modified eosine is blackened in consequence of the decomposition of the wool, the sulphur of which forms lead sulphide.
Potassa turns rosolic acid and coralline from an orange-red to a bright red, while it produces no change in eosine.
The action of potassa gives indications for each of these violets.
Continue washing in this manner till no acid or salt taste remains; then add a quart or more of pure soft water, and cyanuret potassaenough to take it up, or nearly so.
The use of caustic potassa was last revived by Amussat, but failed to find favor from his contemporaries, and soon fell into merited disuse.
Chloride of zinc and caustic potassa are even more unsatisfactory agents for this purpose than the acid, as they are very violent in local destruction and their action is very difficult to limit.
Treated with a weak solution of caustic potassa and heat, the membrane dissolved, leaving a little haziness.
This powder is composed as follows: Chlorate, or hyperoxymuriate of potassa 8 oz.
The use of potassais very apparent in the manufacture of saltpetre.
Chlorate ofpotassa and sulphur, rubbed in a mortar, will produce a crackling noise, similar to that of a whip.
A solution of causticpotassa dissolves it, forming a green solution, which is decomposed by acids, letting fall a hydrosulphuret of tin.
In some saltpetre works, sulphate ofpotassa is used with advantage.
If a small portion of arsenic and chlorate of potassa be mixed, and smartly struck, a flame will be produced, accompanied with an explosion; or, Experiment 39.
Muriate of potassa, and supersulphate of alumina-and-potassa are both used for a similar purpose.
Melt some nitrate ofpotassa in a crucible, and bring it to the state of ignition: now throw in a small quantity of pulverized zinc, and a very violent detonation will take place.
Mix ten grains of chlorate of potassa with one grain of phosphorus, and drop the mixture into sulphuric acid; detonation and flame will be the consequence.
Potassa or soda renders the water in which it is dissolved capable of dissolving silex in large quantity.
There may be added to the boiler, C, certain materials for purifying the acetic acid, such as permanganate of potassa or acetate of soda, so as to obtain an absolutely pure article.
Carbonate of Potassa | Mucilaginous drinks may be given.
Make a solution of chlorate of potassa by dissolving one teaspoonful in a teacupful of hot water, and when cooled off, have the child gargle every hour or two, and swallow a half to a teaspoonful of the solution at the same time.
Chlorate of potassa is the best remedy for a gargle, and for internal use also.
Take: Bicarbonate of potassa 2 drams Water 1 ounce Hive syrup, Paregoric, of each ½ ounce Mix and give half to one teaspoonful every two hours until relieved; then every four to six hours.
Potassa is the oxide of potassium; and soda is the oxide of sodium.
The alkaline solution is represented by the Liquor Sodae Chlorinatae below, and by the Liquor Potassae Chlorinatae, which see under Potassa Chlorinata.
Acetate of Potassa Acetate of Potassa is diuretic and cathartic.
If it forms a reddish-brown solution with liquor of potassa and a still darker one with oil of vitriol, or if it fulminates with iodine, it is adulterated with the oil of some labiate plant.
Potatoes 'dressed' in the skins have been found to be nearly twice as rich in potassa salts as those which have been first peeled.
Nearly insoluble in water; freely soluble in alcohol; the solution is decomposed by caustic potassa into formic acid and iodide of potassa.
The nitrite of potassium to be employed in this process is best prepared by passing nitrous anhydride, evolved from starch and nitric acid, into a solution of potassa (sp.
The salt most essential to the growth of the potato is the double phosphate of ammonia and magnesia; that chiefly required for hay is phosphate of lime; while for almost all plants potassa and ammonia are highly beneficial.
Ammonia and potassa give a greenish-white precipitate, gradually becoming green and then brown in the air.
Take of balsam of copaiba, 2 parts; liquor of potassa (Ph.
Ordinary liquor of potassais generally sold for it.
It is usually administered in combination with sulphate of potassa or bitartrate of potassa and ginger; with mercurials, as the case may indicate.
The firing is so regulated that the gas enters the potassa apparatus in bubbles easily counted, without any violence or inconvenience, and it is kept up as long as gas is extricated.
From bitartrate of potassa or sulphate of potassa (in fine powder), 3 oz.
This acid exists in the juice of many fruits and plants, either alone or associated with other acids, or with potassa or lime.
Let the fused potassa be now poured out upon a bright plate of iron, cut into pieces as soon as it concretes, and put up immediately in a bottle furnished with a well-ground stopper.
Caustic potassa may be crystallized; but in general it occurs as a white brittle substance of spec.
It is insoluble in the caustic lyes of potassa or soda.
The above silicate of potassa and soda is the compound called soluble glass, which applied in solution to the surface of wood, calico, paper, &c.
The sulphate of potassamay be decomposed by acetate of baryta, and the resulting acetate of potassa removed by alcohol.
Should quicklime be added to the solution of the ashes, a corresponding portion of caustic potassa will be introduced into the product, with more or less lime, according to the care taken in decanting off the clear lye for evaporation.
Therefore potassa or chromic acid cannot be utilized, because of the impossibility of limiting their effect.
For this purpose I have found the bicarbonate of potassa in solution, to which lemon-juice is added at the moment it is taken, so as to produce an extemporaneous effervescing draught, often an admirable remedy.
The mixture on the glass may also be treated with an aqueous solution of potassa (containing 10 per cent.
If potassa is then added to the solution, it combines with the bromine and, upon evaporating the decanted fluid, calcining the residue, and treating it with water, a solution of bromide of potassium is obtained.
The destruction of the organic substances is, however, accomplished by means of chlorate of potassaand hydrochloric acid.
The filtrate is next shaken with potassaand ether.
This being accomplished, two grammes of chlorate of potassa are added to the mixture at intervals of about five minutes.
The remaining aqueous solution of the pure sulphate of the alkaloid is placed in a test-tube, a solution of caustic potassa and some ether added, and the mixture well shaken.
The acid solution is then filtered, nearly neutralized with carbonate of soda, and an alcoholic solution of potassaadded in excess.
This method was formerly executed as follows: Nitrate of potassa was fused in a crucible, and the substances to be destroyed added in small portions to the fused mass.
This method is scarcely applicable otherwise than in the detection of arsenic, as in other instances the presence of a large amount of sulphate of potassa would be liable to affect the nicety of the reactions afterwards used.
We must give preference, however, to the method by means of chlorate of potassa and hydrochloric acid.
Upon boiling the precipitate with solution of silicate of potassa, silicate of alumina is thrown down, and phosphate of potassa remains in solution.
The organic substances are first destroyed by means of chlorate of potassa and hydrochloric acid.
The admixture is detected by evaporating the milk to dryness, dissolving the residue in ether, evaporating the etherial solution, and fusing the second residue, which consists of fatty matters, with nitrate of potassa in a platinum crucible.
With capillary tubes of glass, a little dilated toward the middle, of the same shape and size as those which are used in collecting vaccine lymph, I took up a little of the solution of nitrate of potassa above indicated.
The wool taken out of the liquid and purified by washing in water and wringing is moistened in a test-tube with pure potassa lye at 10 per cent.
The readiest agent to produce a good lather upon the hair of the head is a solution of potassa or soda or a dilute water of ammonia.
Whether this be true or not, sulphate ofpotassa constitutes an excellent medium for retaining the liquid in the bottle.
The use of sulphate of potassa is said to have originated from the fact, that the acid mixture was formerly obtained by introducing into the vials acetate of potassa and a sufficiency of sulphuric acid.
The vials are first filled with sulphate of potassa in small crystals, and enough acetic acid is added to thoroughly moisten the salt.
Dissolve the potassa in the water heated to a boiling point and add the other mixture to it.
The other valuable portions of guano are potassa and phosphoric acid (phosphate of lime chiefly); the rest are of little importance.
Potassa gives a blue precipitate, turning to violet and red when the solution is heated.
When potassa or soda is used the distillation is omitted, and the expressed liquor, after filtration, used to decompose fresh lemon juice.
An alcoholic tincture is evaporated to the consistence of a syrup, and thrown into a mixture of equal parts of liquor of potassa and water at a boiling temperature.
To render it pure, caustic potassa is added in excess to the ethereal solution, or the latter is agitated with a solution of potassa, by which means bromide and bromate of potassium are formed.
Mr Hardwich recommends that the cotton, before being converted into pyroxylin, should be cleansed by boiling for two hours in a solution of caustic potassa (2 oz.
It is essentially a weak solution of potassa, and may be extemporaneously prepared by diluting solution of potassa (Ph.
This may be rendered either lighter or darker coloured by lessening or increasing the quantities of the sulphate of potassa and ammonio-sulphate of copper.
The potassa compound (silicate of potassium) has been recommended as a remedy for gouty concretions by Mr Ure.
Potassa produces a better glass than soda, although the latter is now very generally employed, from its lower price.
It is very soluble in alcohol; less so in ether; with ammonia and potassa it forms soluble compounds of a rich purple colour.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "potassa" in a variety of sentences. We hope that you will now be able to make sentences using this word.
