Ответ:
Ba2+ O2--->2BaO
BaO + 2HCl--->BaCl2+ H2O
BaCl2+H2SO4--->BaSO4+2HCl
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Ответ:
Ba2+ O2--->2BaO
BaO + 2HCl--->BaCl2+ H2O
BaCl2+H2SO4--->BaSO4+2HCl