Question

Define the term brisk effervescence?

Answer 1

Brisk effervescence:

• Brisk effervescence is defined as the fast or vigorous evolution of a gas in a chemical reaction.
• Brisk means to have a fast action, while effervescence is the phenomenon of having fizz-like bubbles in anything.
• It is evidence that in the reaction carbon dioxide is liberated.

For example:

• When sodium hydrogen carbonate (NaHCO₃) is added to ethanoic acid (CH₃COOH) brisk effervescence is produced.
• The reaction is given below:

CH₃COOH(l) + NaHCO₃(s) → CH₃COONa(l) + CO₂(g) + H₂O(l)

Ethanoic acid sodium bicarbonate sodium acetate carbon dioxide water