2Ba + O2 = 2BaO
Ba(0) -2e = Ba(+2) 2 в-ль, ок-ие
O2(0) +4e = 2O(-2) 1 ок-ль, в-ие
BaO + H2O = Ba(OH)2
BaO + H2O = Ba(+2) + 2OH(-)
Ba(OH)2 + H2SO4 = BaSO4 + 2H2O
Ba(+2) + 2OH(-) + 2H(+) + SO4(-2) = BaSO4 + 2H2O
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Verified answer
2Ba + O2 = 2BaO
Ba(0) -2e = Ba(+2) 2 в-ль, ок-ие
O2(0) +4e = 2O(-2) 1 ок-ль, в-ие
BaO + H2O = Ba(OH)2
BaO + H2O = Ba(+2) + 2OH(-)
Ba(OH)2 + H2SO4 = BaSO4 + 2H2O
Ba(+2) + 2OH(-) + 2H(+) + SO4(-2) = BaSO4 + 2H2O