I wonder why your teacher gave you this reaction. It is the wrong reaction to discuss LeChantlier's principle.
If the Fe was in solution, yes it would shift to the right. However, the reaction is not reversible so showing it as an equilibrium reaction is very very misleading.
Second point: the Fe is not in solution, and in fact you could add 45 tons of it, and the reaction would not shift right or left, because solids are NOT a factor in equilibrium.
In this reaction
keq=[H2]^4 / [H2O(g)]^4
notice no Fe(s), nor Fe3O4 is a factor in equilibrium.
So all this maybe interesting, but I wonder if your teacher made this up, what was he thinking about? Maybe he wanted you to surmise what I stated, no effect, but few beginning students would ever see that.
LeChatelier's principle holds for equilibrium reactions, but in this case, this is the wrong teaching example.
3Fe(s) + 4H2O(g) <-> Fe3O4(s) + 4H2(g)
What happens when Fe(s) is added?
Would the reaction shift right?
3 answers
What is fe3o4+4h2
The changes reacts