The mass of Ba(CIO₃)₂ : 121.72 g
Reaction
Ba(OH)₂ + 2HCIO₃ ----> Ba(CIO₃)₂ + 2H₂O
Limiting reactant :
Ba(OH)₂ : 2HCIO₃ =
mol Ba(CIO₃)₂ based on limiting reactant(HCIO₃) :
[tex]\tt \dfrac{1}{2}\times 0.8=0.4[/tex]
MW Ba(CIO₃)₂ =Ba+2.Cl+6.O=137.3 + 2 x 35.5 + 6 x 16 = 304.3
mass of Ba(CIO₃)₂ :
[tex]\tt mass=mol\times MW\\\\mass=0.4\times 304.3=121.72~g[/tex]