WHAT IS BRISK EFFERVESCENCE?

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. 

 NaHCO3 + HCl → NaCl + H2O + CO2

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When Carbon dioxide bubbles come out of a compound after the reaction takes place, it is called brisk of effervesence.

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in general

Brisk means = fast or energentic 

effervesence = the process of bubbling as gas escapes

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