Question

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

Answer 1

2Fe(NO₃)₃ + 3MgO → Fe₂O₃ + 3Mg(NO₃)₂

Step-by-step 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 =
`(1)/(2)` , d =
`(3)/(2)`, b =
`(3)/(2)`

multiply through by 2;

a = 2, c = 1, d = 3 and b = 3

2Fe(NO₃)₃ + 3MgO → Fe₂O₃ + 3Mg(NO₃)₂