Brisk effervescence

Brisk effervescence is the fizzing or foaming that results from the release of gas in an aqueous solution. A common example is the release of carbon dioxide formed in carbonated beverages.

There is a glass of water. In the glass is a yellow tablet. The tablet reacts with the water to produce carbon dioxide. This results in effervescence or bubbling of the liquid.

Figure 1. An example of brisk effervescence as a result of the release of gaseous CO₂. Note the bubbles do not need to be yellow.

Referred from:

Article

Sodium bicarbonate test