Paper: CSIR-NET June 2011 · Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Marks: 2 · Difficulty: Easy
Alkali metal superoxides are obtained by the reaction of
(a)Oxygen with alkali metals in liquid ammonia.
(b)Water with alkali metals in liquid ammonia
(c)$\mathrm{H}_{2} \mathrm{O}_{2}$ with alkali metals.
(d)$\mathrm{H}_{2} \mathrm{O}_{2}$ with alkali metals in liquid ammonia.
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
Passing oxygen through the metal–ammonia solution gives the superoxide MO₂ (e.g. KO₂); H₂O₂ or water give peroxides/hydroxides.