Define the Term Brisk Effervescence

Q. Define the term brisk effervescence?

Ans:- The rapid or vigorous evolution of a gas in a chemical process is known as brisk effervescence. It is proof that carbon dioxide is released during the reaction.

The gas in a carbonated drink causes brisk effervescence, which we can see when drinking it. 

Brisk effervescence is described as the rapid evolution of carbon dioxide in a chemical reaction, resulting in bubbles.

Example: –

When sodium bicarbonate and acetic acid react, there is a lot of vigorous effervescence. The process creates carbon dioxide, which is released in a rapid effervescence. The reaction is as follows: 

CH3COOH+NaHCO3→CH3COONa+CO2↑+H2O

Note: The test to see if carbon dioxide is evolved through effervescence is to pass carbon dioxide through lime water, which causes the lime water to turn milky. The reaction is the

Ca (OH)2+CO2→CaCO3↓+H2O

the calcium carbonate precipitate is white and milky in appearance, indicating that carbon dioxide has evolved.

Identify effervescence;

When hydrochloric acid is introduced to a block of limestone in the laboratory, it produces effervescence. The effervescence of carbon dioxide can be seen when a few pieces of marble or an antacid tablet are placed in hydrochloric acid in a test tube with a bung.

Example:

When limestone pieces, which are formed of calcium carbonate, are introduced to diluted hydrochloric acid, carbon dioxide bursts as a gas from the liquid.