Question

Evolution of gas is confirmed by the appearance of____​

Answer 1

Answer:

A gas evolution reaction is a chemical process that produces a gas, such as oxygen or carbon dioxide.

• Acids react with carbonates to produce a salt, carbon dioxide, and water.
• Limewater can be used to detect the presence of carbon dioxide evolved in a reaction.

Answer 2

Answer:

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 reactions may be carried out in a fume chamber when the gases produced are poisonous when inhaled or explosive.