BaCl2+H2SO4=BaSO4+2HCl
Ba(+2)+2Cl(-)+2H(+)+SO4(-2)=BaSO4+2H(+)+2Cl(-)
Ba(+2)+SO4(-2)=BaSO4
Na2SO4+BaCl2=BaSO4+2NaCl
Ba(+2)+2Cl(-)+2Na(+)+SO4(-2)=BaSO4+2Na(+)+2Cl(-)
Ba(+2)+SO4(-2)=BaSO4
BaCl2+CaSO4=BaSO4+CaCl2
Ba(+2)+2Cl(-)+Ca(+2)+SO4(-2)=BaSO4+Ca(+2)+2Cl(-)
Ba(+2)+SO4(-2)=BaSO4