Potassium superoxide

Potassium superoxide is a special yellow solid. It is a rare type of salt. This salt is very useful for keeping people safe. It helps people breathe in places with limited air. You might find it in spacesuits or inside submarines. It can also act as a dehumidifier to dry the air.

This substance works in a few different ways. First, it acts as a scrubber to clean the air. It takes in carbon dioxide from the air around you. Then, it releases fresh oxygen for you to breathe. One kilogram of this salt can take in 0.310 kg of carbon dioxide. It then gives off 0.338 kg of oxygen. It also works as a way to remove moisture from the air.

Scientists use different methods to make this salt. They create it by burning molten potassium. They do this in an atmosphere of extra oxygen. The salt is made of potassium and superoxide ions. These ions are held together by ionic bonding. In a lab, scientists often study it in organic solvents. They may use crown ethers because the salt does not dissolve well in other liquids.

Many groups use this salt for important jobs. The Russian Space Agency uses it in Soyuz spacecraft. They also use it in chemical oxygen generators for spacesuits. During the Apollo 17 mission, it helped five mice breathe. This was part of the Biological Cosmic Ray Experiment. It is also used in canisters for mine rescue and firefighting.

Even though it is helpful, we must be very careful. This salt reacts strongly with water. This reaction gives off a lot of heat. This is why it is not used much in scuba rebreathers. It is also a pressure-sensitive explosive. This means it can detonate if it is scratched. Scientists must handle it with great care.