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Effervescence (chemistry)
 
 
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Effervescence is the escape of gas from an aqueous solution. The term is used to describe the foaming or fizzing that results from a release of gas. An everyday example is seen in carbonated beverages such as soft drinks
Soft drink

A soft drink is a beverage that does not contain alcohol. Carbonated soft drinks are commonly known as soda, soda pop, pop, coke or tonic in various parts of the United States, pop in Canada, fizzy drinks in the United Kingdom and Australia and sometimes minerals in Ireland....
. The visible bubbles are produced by effervescence from the dissolved gas (which itself is not visible in the liquid solution).

In the lab, a common example of effervescence is seen if hydrochloric acid
Hydrochloric acid

Hydrochloric acid is the solution of hydrogen chloride in water. It is a highly corrosive, strong acid mineral acid and has major industrial uses....
 is added to a block of limestone
Limestone

File:Limestone Formation In Waitomo.jpgLimestone is a sedimentary rock composed largely of the mineral calcite . The deposition of limestone strata is often a by-product and indicator of biological activity in the geology record....
.






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Effervescence is the escape of gas from an aqueous solution. The term is used to describe the foaming or fizzing that results from a release of gas. An everyday example is seen in carbonated beverages such as soft drinks
Soft drink

A soft drink is a beverage that does not contain alcohol. Carbonated soft drinks are commonly known as soda, soda pop, pop, coke or tonic in various parts of the United States, pop in Canada, fizzy drinks in the United Kingdom and Australia and sometimes minerals in Ireland....
. The visible bubbles are produced by effervescence from the dissolved gas (which itself is not visible in the liquid solution).

In the lab, a common example of effervescence is seen if hydrochloric acid
Hydrochloric acid

Hydrochloric acid is the solution of hydrogen chloride in water. It is a highly corrosive, strong acid mineral acid and has major industrial uses....
 is added to a block of limestone
Limestone

File:Limestone Formation In Waitomo.jpgLimestone is a sedimentary rock composed largely of the mineral calcite . The deposition of limestone strata is often a by-product and indicator of biological activity in the geology record....
. If a few pieces of marble
Marble

Marble is a nonfoliated metamorphic rock resulting from the metamorphism of limestone, composed mostly of calcite . It is extensively used for Marble sculpture, as a architecture material, and in many other applications....
 or an antacid
Antacid

An antacid is any substance, generally a Base or basic salt, which counteracts gastric acid. In other words, antacids are stomach acid neutralization ....
 tablet are put in hydrochloric acid in a test tube
Test tube

A test tube, also known as a culture tube, sample tube, test flute or flaccid flute, is a piece of laboratory glassware composed of a finger-like length of glass tubing, open at the top, with a rounded U-shaped bottom....
 fitted with a cork
Cork (material)

Cork material is a prime-subset of generic Cork cambium, harvested for commercial use primarily from the Cork Oak tree, Quercus suber, with Portugal producing 50% of cork worldwide....
, effervescence of carbon dioxide
Carbon dioxide

Carbon dioxide is a chemical compound composed of two oxygen atoms covalent bond to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state....
 can be witnessed.

This process is generally represented by the following reaction
Reaction

Reaction may refer to:*Response to another event*Adverse drug reaction*Chemical reaction*Light reaction*Nuclear reaction*Reaction , as defined by Newton's third law...
, where a pressurized dilute solution of carbonic acid
Carbonic acid

Carbonic acid has the Molecular formula H2CO3. It is also a name sometimes given to solutions of carbon dioxide in water , which contain small amounts of H2CO3....
 in water releases gaseous carbon dioxide at decompression
Decompression

Decompression has several meanings:* in physics: the release of pressure and is the opposition of physical compression* in medicine and aviation: decompression sickness...
:

In simple terms, it is the result of the chemical reaction occurring in the liquid which produces a gaseous product.

See also

  • Carbonation
    Carbonation

    Carbonation occurs when carbon dioxide is solvation in water or an aqueous solution. This process yields the "fizz" to carbonated water and sparkling mineral water, the Beer head to beer, and the cork pop and bubbles to Champagne and sparkling wine....