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2. K₂o₃ + .... ---> KOH<=== Nie powinno być K₂O??
3. 2K + 2 H₂O> 2KOH+H₂
4. 4Na + O₂ ---> 2Na₂O
5. Na₂O +H₂O ---> 2NaOH
6. 2Na + 2H₂O ---> 2NaOH+H₂