Difference between revisions of "Effervescence"
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==Origin== | ==Origin== | ||
[[Latin]] ''effervescere'', from ''ex- + fervescere'' to begin to [[boil]], inchoative of ''fervēre'' to boil | [[Latin]] ''effervescere'', from ''ex- + fervescere'' to begin to [[boil]], inchoative of ''fervēre'' to boil | ||
| − | *[ | + | *[https://en.wikipedia.org/wiki/18th_century 1784] |
==Definitions== | ==Definitions== | ||
*1: to bubble, hiss, and foam as [[gas]] [[escapes]] | *1: to bubble, hiss, and foam as [[gas]] [[escapes]] | ||
*2: to show liveliness or exhilaration | *2: to show liveliness or exhilaration | ||
==Description== | ==Description== | ||
| − | '''Effervescence''' is the [[escape]] of [[gas]] from an [[Water|aqueous]] solution and the foaming or fizzing that results from a release of the [[gas]]. An everyday example is seen in [ | + | '''Effervescence''' is the [[escape]] of [[gas]] from an [[Water|aqueous]] solution and the foaming or fizzing that results from a release of the [[gas]]. An everyday example is seen in [https://en.wikipedia.org/wiki/Carbonation carbonated beverages] such as soft drinks. The visible bubbles are produced by effervescence from the dissolved gas (which itself is not visible in the [[liquid]] solution). |
| − | In the [[laboratory]], a common example of effervescence is seen if [ | + | In the [[laboratory]], a common example of effervescence is seen if [https://en.wikipedia.org/wiki/Hydrochloric_acid hydrochloric acid] is added to a block of [https://en.wikipedia.org/wiki/Limestone limestone]. If a few pieces of marble or an antacid tablet are put in hydrochloric acid in a test tube fitted with a bung, effervescence of carbon dioxide can be witnessed. |
| − | This [[process]] is generally [[represented]] by the following [[reaction]], where a pressurized dilute solution of carbonic acid in water releases gaseous carbon dioxide at [ | + | This [[process]] is generally [[represented]] by the following [[reaction]], where a pressurized dilute solution of carbonic acid in water releases gaseous carbon dioxide at [https://en.wikipedia.org/wiki/Decompression decompression]: |
:H2CO3 → H2O + CO2 | :H2CO3 → H2O + CO2 | ||
Latest revision as of 01:08, 13 December 2020
Origin
Latin effervescere, from ex- + fervescere to begin to boil, inchoative of fervēre to boil
Definitions
Description
Effervescence is the escape of gas from an aqueous solution and the foaming or fizzing that results from a release of the gas. An everyday example is seen in carbonated beverages such as soft drinks. The visible bubbles are produced by effervescence from the dissolved gas (which itself is not visible in the liquid solution).
In the laboratory, a common example of effervescence is seen if hydrochloric acid is added to a block of limestone. If a few pieces of marble or an antacid tablet are put in hydrochloric acid in a test tube fitted with a bung, effervescence of carbon dioxide can be witnessed.
This process is generally represented by the following reaction, where a pressurized dilute solution of carbonic acid in water releases gaseous carbon dioxide at decompression:
- H2CO3 → H2O + CO2
In simple terms, it is the result of the chemical reaction occurring in the liquid which produces a gaseous product.
