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Updated: May 22, 2025
After the quantity of must has been added, drop six-thousandths of the solution of ammonia into the mixture, constantly shaking it while dropping, then test it, and so on, until, after every further addition required with litmus paper, it is no longer reddened after having been wiped off."
If your soil is too alkaline for the growth of plants you can demonstrate that fact by experiment, or if it is capable of being used by the application of gypsum, that also can be determined by experiment and noting the behavior of the same plants afterwards. It is rather a slow process but it is sure enough. Litmus and Alkali.
Put unslacked lime in a well-glazed pan; cover it with pure water, and let it remain for one day. Then strain off the water. This water will change sap-green into blue. Blue. Dilute Saxon blue with water; or to the solution of litmus add distilled vinegar. Green. Dissolve verdigris in distilled water and add gum arabic. Or, dissolve sap-green in water and add gum. Red.
Now chloride of sodium when dissolved in water will turn litmus neither blue nor red; it is therefore neutral. Such simple, neutral, monobasic salts are mostly very stable. By "stable" we mean they possess considerable resistance to agencies, that, in the case of other salts, effect decompositions of those salts.
Heat strongly in the hood of a chemical laboratory or some other place where the odors do not get into the room. First hold in the escaping gases a wet strip of red litmus paper. Next hold in the mouth of the tube a strip of a paper wet with a solution of lead nitrate. Observe also that water condenses in the upper part of the tube and that a black, charred mass remains behind.
Is there any simple soil test for alkali that can be made without a chemical analysis? You can ascertain the presence of alkali by using red litmus paper, which will be turned blue by the alkali in the soil, if the soil is moist enough.
Also that in what they can get by fair means, each of the trio reserves the right to act alone and independently of the other two, but when it comes to a cut-throat game, they combine as readily as hydrogen and sulphur and oxygen; and, combined, they have the same effect on a proposition that sulphuric acid has on litmus paper. But this is all only a Jew's guess, of course.
Observe that it is colorless and either transparent or translucent, and when poured from one vessel to another is glairy and more or less adhesive. Its reaction is alkaline to litmus paper. Experiment 57. Make a thin paste from pure starch or arrowroot. Dilute a little of the saliva with five volumes of water, and filter it. This is best done through a filter perforated at its apex by a pin-hole.
Should you presume to interrupt her in her favourite occupations, should you present yourself before her like a creditor on the day of maturity, I swear to you that your note would be protested, and that you would have nothing better to do than return to Hungary." "You are sure of it?" "As sure as that sulphuric acid will turn litmus red."
The name acids is given to a class of substances, mostly soluble in water, having an acid or sour taste, and capable of turning blue litmus solution red.
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