Напишите превращения: Ba➡BaO➡Ba(OH)2➡BACI2➡BaSO4
2Ba + O2 = 2BaO BaO + H2O = Ba(OH)2 Ba(OH)2+NaCl=BaCl2+Na(OH)2 BaCl2+H2SO4=BaSO4+2HCl
2Ba + O2 -> 2BaO BaO + H2O -> Ba(OH)2 Ba(OH)2 + 2HCl -> BaCl2 + 2H2O BaCl2 + H2SO4 -> BaSO4↓ + 2HCl