Define:Brisk Effervescence.
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Brisk effervescence is defined as the rapid or vigorous evolution of a gas in a chemical reaction. For example, when hydrochloric acid is added to sodium bicarbonate, bubbles of carbon dioxide gas are formed vigorously.
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Effervescence is the escape of gas from an aqueous solution and the foaming or fizzing that results from that release.
Examples
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.
CaCO3 + 2 HCl → CaCl2 + H2O + CO2
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
Examples
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.
CaCO3 + 2 HCl → CaCl2 + H2O + CO2
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
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