- Ba(OH)2+CuSO4→BaSO4+Cu(OH)2Ba(OH)2+CuSO4→BaSO4+Cu(OH)2Ba ( OH )_{2}+ CuSO _{4} \rightarrow BaSO _{4}+ Cu ( OH )_{2}
- H2SO4+BaCO3→BaSO4+CO2+H2OH _{2} SO _{4}+ BaCO _{3} \rightarrow BaSO _{4}+ CO _{2}+ H _{2} O
- Na2SO4+Ba(NO3)2→BaSO4+2NaNO3Na _{2} SO _{4}+ Ba \left( NO _{3}\right)_{2} \rightarrow BaSO _{4}+2 NaNO _{3}
- H2SO4+Ba(OH)2→BaSO4+2H2OH _{2} SO _{4}+ Ba ( OH )_{2} \rightarrow BaSO _{4}+2 H _{2} O