FeO3+HBr=Ca(OH)2=SO2+H2O=

Question

FeO3+HBr=
Ca(OH)2=
SO2+H2O=

Answer 1

1.  FeO + 2 HBr = H2O + FeBr2
2.  a) Ca(OH)2 = CaO + H2O   b)Ca(OH)2 = Ca + OH   c)Ca(OH)2 = Ca + H2O + O2
3.  SO2 + H2O = H2SO3