2Ba+O2=2BaO
BaO+H2SO4=BaSO4+H2O
BaSO4+H2S=BaS+H2SO4
BaS+2HCl=BaCl2+H2S
BaCl2+NaNO3=Ba(NO3)2+2NaCl
Ba(NO3)2=BaO+N2O5
2Ba+O2=2BaO
BaO+H2SO4=BaSO4+H2O
BaSO4+H2S=BaS+H2SO4
BaS+2HCl=BaCl2+H2S
BaCl2+NaNO3=Ba(NO3)2+2NaCl
Ba(NO3)2=BaO+N2O5