Od
HXO(s)
HX(s)
O2 (g)
Balanced Ratio?

2:2:1

Explanation:

The reaction expression is given as:

              HXO   →    HX   +  O₂

We are to balanced this unbalanced reaction expression.

  To solve this put, coefficient a, b and c before every specie:

     aHXO   →    bHX   +  cO₂

Now use a mathematical approach to solve this;

  Conserving H:   a  = b

                       X:   a  = b

                       O:    a  = 2c

    let a  = 1, b  = 1 and  c =  

  Multiply through by 2;

   a  = 2, b = 2 and c  = 1

 So;

          2HXO   →   2HX   +  O₂

Balanced ratio;       2:2:1

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