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This is the equation for the thermite reaction:
Fe2O3 + 2Al = Al2O3 + 2Fe

You know the charge on the Al and O ions because you know how many electrons each atoms "wants" to give or take by looking at their position on the periodic table (and because it was listed on the cards). Fe is element 26, iron, in the middle of the periodic table. Since it forms Fe2
2
O3
3
, what charge does the Fe ion have?

Respuesta :

dsdrajlin

The charge of Fe in Fe₂O₃ is +3.

Let's consider the equation for the thermite reaction:

Fe₂O₃ + 2 Al ⇒ Al₂O₃ + 2 Fe

One of the reactants is ferric oxide, we can calculate the charge of Fe in Fe₂O₃ considering that:

  • The sum of the charges of the atoms is equal to the charge of the compound.
  • The charge of a neutral compound is 0.
  • The charge of O in oxides is -2.

The charge of Fe in Fe₂O₃ is:

[tex]2Fe+3O = 0\\2Fe+3(-2)= 0\\Fe=+3[/tex]

The charge of Fe in Fe₂O₃ is +3.

Learn more: https://brainly.com/question/11938054

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