Repede
Vo rog!!!
Exercițiul 2
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H2SO4 +Zn =ZnSO4 + H2
H2SO4 + ZnO= ZnSO4 +H2O
H2SO4 +Zn(OH)2=ZnSO4 + 2H2O
H2SO4 +Zn Cl2 =ZnSO4 + 2HCl
oxizi : ZnO
baze : Zn(OH)2
acizi : H2SO4, HCl
saruri : ZnSO4 ,ZnCl2
metale : Zn
nemetale :H2