Definitions for limescale
limescale

WiktionaryRate this definition:0.0 / 0 votes

1. limescalenoun

   A white, chalky deposit of calcium carbonate found in kettles, washing machines etc., especially in a hard water area.

WikipediaRate this definition:0.0 / 0 votes

1. Limescale

   Limescale is a hard, chalky deposit, consisting mainly of calcium carbonate (CaCO3). It often builds up inside kettles, boilers, and pipework, especially that for hot water. It is also often found as a similar deposit on the inner surfaces of old pipes and other surfaces where "hard water" has flowed. Limescale also forms as travertine or tufa in hard water springs. The colour varies from off-white through a range of greys and pink or reddish browns, depending on the other minerals present. Iron compounds give the reddish-browns. In addition to being unsightly and hard to clean, limescale can seriously damage or impair the operation of various plumbing and heating components. Descaling agents are commonly used to remove limescale. Prevention of fouling by scale build-up relies on the technologies of water softening or other water treatment.

WikidataRate this definition:0.0 / 0 votes

1. Limescale

   Limescale is the hard, off-white, chalky deposit found in kettles, hot-water boilers and the inside of inadequately maintained hot-water central heating systems. It is also often found as a similar deposit on the inner surface of old pipes and other surfaces where "hard water" has evaporated. Other than being unsightly and harder to clean, limescale seriously impairs the operation or damages various components. The type found deposited on the heating elements of water heaters has a main component of calcium carbonate. Hard water contains calcium bicarbonate and/or similar ions. Calcium salts, such as calcium bicarbonate and calcium carbonate are both more soluble in hot water than cold water. Thus, heating water does not cause calcium carbonate to precipitate per se. However, there is an equilibrium between dissolved calcium bicarbonate and dissolved calcium carbonate: Ca2+ + 2HCO3- ⇋ Ca2+ + CO32- + CO2 + H2O where the equilibrium is driven by the carbonate/bicarbonate, not the calcium. Note that the CO2 is dissolved in the water. There is also an equilibrium of carbon dioxide between dissolved in water and the gaseous state: CO2 ⇋ CO2 The equilibrium of CO2 also moves to the right towards gaseous CO2 when the water temperature rises. When water that contains dissolved calcium carbonate is warmed, CO2 is removed from the water as gas causing the equilibrium of bicarbonate and carbonate to shift to the right, increasing the concentration of dissolved carbonate. As the concentration of carbonate increases, calcium carbonate precipitates as the salt: Ca2+ + CO32- ⇋ CaCO3.

How to pronounce limescale?

1. Alex

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   David

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   Mark

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   Daniel

   British

   Libby

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   Mia

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   Karen

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   Neerja

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   Zira

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   Oliver

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   Wendy

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   Tessa

   South African

How to say limescale in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of limescale in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of limescale in Pythagorean Numerology is: 7

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References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Limescale
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Limescale
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=limescale