Ba (OH) 2+Na2SO3-->BaSO3+2NaOH - - >BaSO3+NaCL - - >BaCl2+2NaSO3 - - > BaCl2 + + Na2SO4-->BaSO4+2NaCl
Ba (OH) 2+Na2SO3-->BaSO3+2NaOH - - >BaSO3+NaCL - - >BaCl2+2NaSO3 - - > BaCl2 + + Na2SO4-->BaSO4+2NaCl