Question

Which of the following is oxone?
    (A) $K{O_2}$
    (B) $N{a_2}{O_2}$
    (C) $L{i_2}O$
    (D) None

Answer 1

Hint: Oxone is a strong oxidising agent and used in sanitizing swimming pool water with very less amount of chlorine. It is a potassium salt of peroxymonosulfuric acid.

Complete step by step answer:
-Oxone is the trade name for Potassium peroxymonosulfate ($KHS{O_5}$). It is also known as MPS, KMPS, potassium monopersulfate, potassium caroate or Caroat. It is basically a potassium salt of peroxymonosulfuric acid. It is widely used as an oxidising agent.

The triple salt: $2KHS{O_5}.KHS{O_4}.{K_2}S{O_4}$ is a form of oxone which has higher stability and its most active component is $KHS{O_5}$ which is a salt formed from Caro’s acid (${H_2}S{O_5}$).
-Oxone is a highly versatile oxidising agent which oxidises aldehydes to carboxylic acids. If some alcoholic solvents are present then esters will be formed. It breaks an internal alkene into two carboxylic acids and the terminal alkenes are converted into epoxides. Tertiary amines get converted into amine oxides, sulfides into sulfones and phosphenes get converted into phosphine oxides.
-Oxone is used to keep the water clean in swimming pools so that the chlorine present will work to sanitize the water instead of clarifying it. Hence much less amount of chlorine will be required to keep the swimming pools clean. But it has some disadvantages also like some of the by-products formed by it might be more toxic that the contaminants present in it originally.

-Now let us talk about the options given.
For (A) $K{O_2}$: It is potassium superoxide and is a stable salt of the superoxide anion. It is used as a ${H_2}O$ humidifier, $C{O_2}$ scrubber and also as an ${O_2}$ generator in space suits, submarines, spacecrafts, etc. also it is a potential oxidiser which when combined with different substances or compounds can cause explosive reactions.

For (B) $N{a_2}{O_2}$: It is sodium peroxide and a strong base as well. It usually exists in hydrated forms like $N{a_2}{O_2}.2{H_2}{O_2}.4{H_2}O$, $N{a_2}{O_2}.2{H_2}O$, $N{a_2}{O_2}.8{H_2}O$, etc.

For (C) $L{i_2}O$: It is lithium oxide and commonly known as Lithia. It reacts with water and steam to form lithium hydroxides. Its electrolysis can yield lithium metal with oxygen as a by-product.
Since we have seen that among these 3 options none of them is Oxone.
So, the correct answer is “Option D”.

Note: Do not get confused between oxone and ozone. Both are entirely different compounds. Oxone is $KHS{O_5}$, while ozone is ${O_3}$.
Also oxone is used in water sanitization because it will prevent the formation of new and combined chlorine by eliminating the organics present in water without creating more combined forms of chlorine.