What is an example of a redox reaction that takes place in a firework?

Question

A complete redox reaction, containing a oxidizing agent, reducing agent, etc.

Answer 1

The most commonly used oxidizers are nitrates, the major component of black powder. Nitrates are composed of nitrate ions (NO3-) with metal ions. The most common oxidizer is potassium nitrate, which decomposes to potassium oxide, nitrogen gas, and oxygen gas.

2KNO3 ---> 2K2O + N2 + 2.5 O2.

In the 1830s Italian fireworks makers found a group of more explosive oxidizers, which produced temperatures of 1700 to 2000°C and made possible the creation of much more intense colors. These oxidizers are the chlorates, which contain the chlorate ion (ClO3-), and they give up all their oxygen upon reaction.

2KClO3 ---> 2KCl + 3O2

Perchlorates contain the perchlorate ion (ClO4-), in which each chlorine atom is bonded to four oxygen atoms. The chlorine is bonded to its maximum number of oxygen atoms, and so perchlorates are more stable than chlorates. Yet, perchlorate is able to release all four of its oxygen atoms.

KClO4 ---> KCl + 2O2

Some other reactions include:
O2 + S ---> SO2
O2 + C ---> CO2