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Scrie produsi de reactie si egalati reactia:
Cu+HCl⇒
Cu+O₂⇒
Na+H₂O⇒
Al+Cu SO₄⇒
Fe+S⇒
Zn+Ag NO₃⇒


Răspuns :

Cu+HCl=nu reactioneaza
2Cu+O₂=2CuO
2Na+2H₂O=2NaOH+H₂
2Al+3CuSO₄=Al₂(SO₄)₃+3Cu
2Fe+3S=Fe₂S₃
Zn+2AgNO₃=Zn(NO₃)₂+2Ag