Write a balanced equation for the double replacement neutralization reaction described using the smallest possible integer coefficient. A reaction occur when adequate solution of barium hydroxide and perchloric acid are combined?

Answer:
The answer to your question is Ba(OH)₂  + 2HClO₄  ⇒  Ba(ClO₄)₂  +  2H₂O
Explanation:
Reactants
Barium hydroxide
Perchloric acid
Formula
Barium hydroxide = Ba(OH)â‚‚
Perchloric acid = HClOâ‚„
Equation (it is a double replacement)
        Ba(OH)₂  +  HClO₄  ⇒  Ba(ClO₄)₂  +  H₂O
      Reactants        Elements     Products
         1               Ba           1
         1               Cl            2
         3               H            2
         6               O           9
This reaction is unbalanced
2) Balance the chemical reaction
       Ba(OH)₂  + 2HClO₄  ⇒  Ba(ClO₄)₂  +  2H₂O
      Reactants        Elements     Products
         1               Ba           1
         2               Cl           2
         4               H            4
        10               O           10
Now the reaction is balanced
Products  Â
Ba(ClOâ‚„)â‚‚ Â Â Barium perchloride
2Hâ‚‚O Â Â Â Â Â water