Lime water or milk of lime is the common name for saturated calcium hydroxide solution. The "lime" has nothing to do with the citrus fruit, as many calcium compounds are named "lime" (for example, slaked lime and quick lime). Lime water used as a paint is called lime wash (see whitewash). In chemistry, saturation has four different meanings: In physical chemistry, saturation is the point at which a solution of a substance can dissolve no more of that substance and additional amounts of that substance will appear as a precipitate. ... It has been suggested that this article or section be merged with Portlandite. ... Dissolving table salt in water This article is about a chemical solution; for other uses of the term solution, see solution (disambiguation). ... Species & major hybrids Species Citrus aurantifolia - Key lime Citrus maxima - Pomelo Citrus medica - Citron Citrus reticulata - Mandarin & Tangerine Major hybrids Citrus ×sinensis - Sweet Orange Citrus ×aurantium - Bitter Orange Citrus ×paradisi - Grapefruit Citrus ×limon - Lemon Citrus ×limonia - Rangpur lime Citrus ×latifolia - Persian lime See also main text for other hybrids Citrus... Percentages are relative to US RDI values for adults. ... General Name, Symbol, Number calcium, Ca, 20 Chemical series alkaline earth metals Group, Period, Block 2, 4, s Appearance silvery white Atomic mass 40. ... Lime is a general term for various naturally occurring minerals and materials derived from them in which carbonates, oxides and hydroxides of calcium predominate. ... Calcium hydroxide is a chemical compound with the chemical formula Ca(OH)2. ... Calcium oxide (CaO), commonly known as lime or quicklime, is a widely used chemical compound. ... Whitewash, or calcimine, kalsomine, or calsomine is a type of inexpensive paint made from slaked lime (calcium hydroxide) and chalk (whiting). ...

Etymology

• Middle English lim, from Old English līm, birdlime.

Middle English is the name given by historical linguistics to the diverse forms of the English language spoken between the Norman invasion of 1066 and the mid-to-late 15th century, when the Chancery Standard, a form of London-based English, began to become widespread, a process aided by the... Old English (also called Anglo-Saxon) is an early form of the English language that was spoken in parts of what is now England and southern Scotland between the mid-fifth century and the mid-twelfth century. ... Birdlime is a viscid, adhesive substance used in trapping birds. ...

Making lime water

Lime water can be made by adding calcium hydroxide to distilled water. The mixture needs to be shaken every few hours for a period of 24 hours to ensure that as much calcium hydroxide dissolves as possible. It is then left to settle and the solution is siphoned off the sediment. It has been suggested that this article or section be merged with Portlandite. ... Distilled water is water that has virtually all of its impurities removed through distillation (boiling the water and re-condensing the steam into a clean container, leaving contaminants behind). ... siphon principle A siphon (also spelled syphon) is a continuous tube that allows liquid to drain from a reservoir through an intermediate point that is higher than the reservoir, the up-slope flow being driven only by hydrostatic pressure without any need for pumping. ... Sediment is any particulate matter that can be transported by fluid flow and which eventually is deposited as a layer of solid particles on the bed or bottom of a body of water or other liquid. ...

F(_) C 1< 3 12

C H (_) C 1< N 0 12 12 1 S

Uses of Lime water

In chemistry, lime water can be used to test the presence of carbon dioxide because lime water reacts with carbon dioxide to produce a precipitate of calcium carbonate. It is used to show how limewater + carbon dioxide chalk(/limestone) + water : Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. ... Calcium carbonate is a chemical compound, with chemical formula CaCO3. ...

Ca(OH)₂(aq) + CO₂(g) CaCO₃(s) + H₂O(l)

When the old vaudeville style medicine shows promoting various patent medicines were in full swing, lime water was often used as a part of the act. The salesperson would have an audience member blow through a straw into a glass of lime water. Since their exhalations contained carbon dioxide, the water would turn cloudy; the huckster then announced that this reaction proved that the audience member suffered from some ailment. If too much carbon dioxide comes into contact with the cloudy limewater, it will cause the calcium carbonate precipitate to redissolve to form soluble calcium hydrogencarbonate. Vaudeville is a style of multi-act theatre which flourished in North America from the 1880s through the 1920s. ... Patent medicine is the term given to various medical compounds sold under a variety of names and labels, though they were for the most part actually trademarked medicines, not patented. ... Sales, or the activity of selling, forms an integral part of commercial activity. ... The drinking straw is a device used for sucking up a liquid - usually a drink. ... Breathing transports oxygen into the body and carbon dioxide out of the body. ... A huckster is a seller of small articles, usually of cheap or shoddy quality, or one engaged in haggling or making petty bargains. ... Calcium carbonate is a chemical compound, with chemical formula CaCO3. ... Calcium hydrogencarbonate is formed when calcium carbonate and carbon dioxide are dissolved in water. ...

CaCO₃(s) + CO₂(g) + H₂O(l) Ca(HCO₃)₂(aq)

The huckster had a patent medicine bottle filled with vinegar or some similar acid. He then would pour some of the acid into the glass of cloudy limewater. The acid reacted with the calcium carbonate, and the water would instantly clear. This demonstrated the potent effect of the nostrum he was selling to eliminate the "disease" demonstrated by the reaction. Vinegar is sometimes infused with spices or herbs—as here, with oregano. ... Acidity redirects here. ... Vapours of hydrogen chloride in a beaker and ammonia in a test tube meet to form a cloud of a new substance, ammonium chloride A chemical reaction is a process that results in the interconversion of chemical substances. ... Patent medicine is the term given to various medical compounds sold under a variety of names and labels, though they were for the most part actually trademarked medicines, not patented. ...

Lime water is also used in the traditional making of tortillas.^[1] Two cooked flour tortillas. ...

In buon fresco painting, lime water is used as the colour solvent to apply on fresh plaster. Fresco by Dionisius representing Saint Nicholas. ...

References

1. ^ Hambidge KM; Krebs NF, Westcott JL, Sian L, Miller LV, Peterson KL, Raboy V (July 2005). "Absorption of calcium from tortilla meals prepared from low-phytate maize.". The American Journal of Clinical Nutrition 82 (1): 84-7. PMID 16002804. Retrieved on 2006-10-02.