Preparation and Properties of Potassium Peroxide and Superoxide
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Q. Potassium when heated strongly in oxygen, it forms
K2O
KO2
K2O2
KO3
Q.
KO2 finds use in breathing equipment to safeguard the user to breathe in oxygen generated internally in the apparatus without being exposed to toxic fumes outside. The supply of oxygen is due to :
i.Slow decomposition of KO2
ii.reaction of superoxide with moisture in the exhaled air
iii.reaction of KO2 with CO2 in the exhaled air
only iii is correct
- ii and iii are correct
both i and iii are correct
i ii and iii are all correct