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2.BaO+H2SO4=BaSO4+H2O,
3.Ba(OH)2+H2SO4=BaSO4+2H2O,jonowo;
Ba(2+) +2OH(-) +2H(+) +SO4(2-)=BaSO4+2H2O,
Ba(2+) +SO4(2-)=BaSO4,
4.BaO+SO3=BaSO4,
5.Ba(OH)2+SO3=BaSO4+H2O,
6.BaCl2+H2SO4=BaSO4+2HCl,
7.Ba(OH)2+Na2SO4=BaSO4+2NaOH,
8.BaCl2+Na2SO4=BaSO4+2NaCl.
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