# What is a "peroxide linkage"?

Sep 5, 2017

Well a peroxide is an $O - O$ linkage.......

#### Explanation:

Of which the simplest compound is $H - O - O - H$, hydrogen peroxide. Oxygen is here in a $\stackrel{- I}{O}$ instead of its usual $\stackrel{- I I}{O}$ or $\stackrel{0}{O}$ oxidation states.

And super-oxide is contains the ${O}_{2}^{-}$ ion, ""^(-)O-dotO, with formal oxidation states of $\stackrel{- I}{O}$ and $\stackrel{0}{O}$.

When superoxide salts react with water they undergo disproportionation to give water, and oxygen gas....and firefighters (for instance) use this as a portable oxygen supply.....

$4 {O}_{2}^{-} + 2 {H}_{2} O \rightarrow 3 {O}_{2} \left(g\right) \uparrow + 4 H {O}^{-}$

Superoxide is commonly supplied as its potassium salt, ${K}^{+} {O}_{2}^{-}$, $\text{potassium superoxide}$.