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Ba-BaCl2-BaSO4-BaO-Ba(NO3)2 VA ROGGGG,,Ajutatiuma
 b)Oxid+acid=sare+apa

Răspuns :

[tex]\diplaystyle \mathtt{Ba+Cl_2=BaCl_2} \\ \\ \mathtt{BaCl_2+H_2SO_4=BaSO_4+2HCl} \\ \\ \mathtt{BaSO_4+FeO=BaO+FeSO4} \\ \\ \mathtt{BaO+2AgNO_3=Ba(NO_3)_2+Ag_2O}[/tex]