Question

What is an example of a reaction that produces gas (see description)?

For the reaction example, please do not include any hazardous or toxic products or reactants (i.e. `"H"_2"SO"_4`, `"HCl"`, etc.). Also, none of the reactants can be gases. Any help is seriously appreciated and I am quite desperate here! Thank you so much!

Answer 1

Hydrogen peroxide

Explanation:

Hydrogen peroxide (`"H"_2"O"_2`) is commonly used as a first aid antiseptic and decomposes naturally. They are usually kept in special containers to retain it's chemical properties, but if you poured some into a bowl you would see little gas bubbles rising up.

2`H2O2` → 2`H2O` + `O2`

hydrogen peroxide → water + oxygen gas