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1 answer:
Answer:
Redox but not combustion
Explanation:
2K(s) + 2H₂O(l) → 2KOH(aq) + H₂(g)
This is a redox reaction, because the oxidation number of K increases from 0 to +1, while that of H decreases from +1 to 0.
It is not a combustion reaction, because combustion is the reaction
with O₂.
The equation for the combustion of potassium would be
4K(s) + O₂(g) ⟶ 2K₂O(s)
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