First slide

Chemical Properties

Question

Correct statements about ${KO}_{2}$ are
A) it is a superoxide
B) Oxidation state of potassium is $- \frac{1}{2}$
C) It reacts with water to form $KOH, H_{2} O_{2} and O_{2}$
D) It is coloured
E) It is paramagnetic

Moderate

A

All of these
B

All except ‘B’
C

All except ‘C’
D

All except ‘B’ and ‘C’

Solution

Oxidation state of ‘K’ in $K O_{2}$ is +1
Oxidation state of ‘O’ in $K O_{2}$ is $- \frac{1}{2}$

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