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Completeaza si egaleaza ecuatiile reactiilor de obtinere a bazelor:...+H₂O=NaOH
...+H₂O=Ca(OH)₂
CuSO₄+...=Cu(OH)₂+...
FeCl₃+...=Fe(OH)₃+...
Va rog!


Răspuns :

Na2O +H2O= 2NaOH
CaO + H2O----> Ca(OH)2
CuSO4 +2 Na OH---> Cu(OH)2 ↓ + Na2SO4
FeCl3  +3 KOH----> Fe(OH)3 ↓  +3 KCl