Write the balanced equation for the reaction that occurs when Iron (III) nitrate is mixed with magnesium oxide forming iron(III) oxide and magnesium nitrate

2Fe(NO₃)₃  +  3MgO  →  Fe₂O₃  + 3Mg(NO₃)₂

Explanation:

Given chemical species:

  Reactants:  Iron(III) nitrate

                      Magnesium oxide

 Products:  Iron (III) oxide

                   Magnesium nitrate

The chemical symbols:

   Fe(NO₃)₃  +  MgO  →  Fe₂O₃  + Mg(NO₃)₂

The reaction of this type is called a double displacement reaction.

 Now let us ensure that it is balanced;

         aFe(NO₃)₃  +  bMgO  →  cFe₂O₃  + dMg(NO₃)₂

Conserving Fe;

           a  = 2c

Conserving N;

           3a  = 2d

 Conserving O

            9a  + b  = 3c + 6d

 Conserving Mg

           b  = d

let a  = 1, c  = , d = , b =  

 multiply through by 2;

     a = 2, c  = 1, d  = 3 and b  = 3

     2Fe(NO₃)₃  +  3MgO  →  Fe₂O₃  + 3Mg(NO₃)₂