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Answer for the clue "Having a pH value of less than 7 ", 4 letters:
acid

Alternative clues for the word acid

Usage examples of acid.

It is useful in those diseases in which the fluids of the body are abnormally acid, as in rheumatism.

A plant of Drosera, with the edges of its leaves curled inwards, so as to form a temporary stomach, with the glands of the closely inflected tentacles pouring forth their acid secretion, which dissolves animal matter, afterwards to be absorbed, may be said to feed like an animal.

As for drinking, I am something of a chemist and I have yet to find a liquor that is free from traces of a number of poisons, some of them deadly, such as fusel oil, acetic acid, ethylacetate, acetaldehyde and furfurol.

If the proper materials, such as acid, coal gas, or acetaldehyde and a proper catalyst were available, then wood cellulose could be converted into ethyl alcohol.

Filter off the precipitate and wash with hot water containing a little sodium acetate, dissolve it off the filter with hot dilute hydrochloric acid, add ammonia in excess, and pass sulphuretted hydrogen for five minutes.

The precipitation of lead from acid solutions with sulphuric acid, and the solubility of the precipitate in ammonium acetate, distinguishes it from all other metals.

To convert, for example, a solution of a substance in hydrochloric acid into a solution of the same in acetic acid, alkali should be added in excess and then acetic acid.

The determination is rendered sharper and less liable to error by the addition of a few drops of acetic acid to convert the chromate into bichromate.

The small quantity of white flocculent precipitate which may be observed in the acetic acid solution before titrating, contains the whole of the iron as ferric arsenate.

Boil off the gas, add ammonia until a precipitate is formed, and then acidify somewhat strongly with acetic acid.

Add acetic acid until the solution is acid and the precipitate is quite dissolved.

The iron is reduced to the ferrous state and phosphate of alumina precipitated in an acetic acid solution.

From baryta, which it also resembles, it is distinguished by not yielding an insoluble chromate in an acetic acid solution, by the solubility of its chloride in alcohol, and by the fact that its sulphate is converted into carbonate on boiling with a solution formed of 3 parts of potassium carbonate and 1 of potassium sulphate.

In solutions rendered faintly acid with acetic acid, they give a yellow precipitate with bichromate of potash.

To separate these, ammonia is added till the solution is alkaline, and then acetic acid in slight excess.