Question

Give an example of a chemical reaction for the following situation: Sound is produced.

Answer 1

Explosion reaction:-

• In this type of reaction, the released gases quickly spread which results in the formation of sound energy.
• When certain energy ignites the substance, heat, light, and sound energies are released almost immediately.
• An example of such a type of reaction is the reaction between hydrogen and oxygen which forms water vapour.

$\underset{\mathrm{Hydrogen}}{2{\mathrm{H}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{Water}\mathrm{vapour}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}+\mathrm{energy}$

• As hydrogen goes under combustion a lot of energy is released and most of this energy is released in the form of heat.
• This heat causes the gases to expand. And then a lot of heat is released into the gaseous mixture and the air which is adjacent to it very quickly expands.
• This gaseous mixture that is formed now contains hydrogen, oxygen, and water vapour that is liberated from this reaction.
• This quick explanation of gas molecules as a result breaks the sound barrier.
• And due to this explosion, we hear the pop sound of the burning of hydrogen.

Therefore, the burning of hydrogen gives out a pop sound.