Question

How can you show that gases evolved in a chemical reaction?

Answer 1

the gases evolved in a chemical reaction can be expressed by using an upward arrow

Answer 2

A gas evolution reaction is a chemical reaction in which one of the end products is a gas such as oxygen or carbon dioxide.[1][2] Gas evolution reactions may be carried out in a fume chamber when the gases produced are poisonous when inhaled or explosive.

or

I pic u this is a second answer

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