Question:
When potassium is reacted with water, which compound(s) is (are) formed preferentially?
When potassium is reacted with water, which compound(s) is (are) formed preferentially?
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Heavier alkali metals stabilize superoxides.
Updated On: May 1, 2026
- K$_2$O
- KO$_2$
- Both K$_2$O and KO$_2$
- K$_2$O$_2$
- K$_2$O$_3$
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The Correct Option is D
Solution and Explanation
Concept:
Alkali metals react with oxygen forming oxides, peroxides, or superoxides depending on size.
Step 1: Trend.
Li → oxide
Na → peroxide
K → superoxide
Step 2: Reaction.
Potassium forms KO$_2$ (superoxide).
Step 3: Conclusion.
KO$_2$ is formed.
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