Question

——is the bubble formation due to evolution of a gas during a
chemical reaction.​

Answer 1

Answer:

Precipitate is the correct answer

Answer 2

Explanation:

a gas evolution reaction is a chemical reaction in which one of the end products is a gas such as oxygen or carbon dioxide gas evolution reaction may be carried out on a fume chamber when the gasses produced are poisonous when inhaled or are explosive in this example hydrogen gas is diometric form is released