Which of the following is the correct balanced equation for the given chemical reaction?

Fe + H₂ O $$\rightarrow$$ Fe₃ O ₄+ H₂

Correct option is D

​The correct answer is (d) 3Fe (s)+ 4H₂O (g) $$\rightarrow$$​ Fe₃O₄(s)+ 4H₂(g)​

​Explanation:

​

Balance Iron (Fe):

• On the right side, Fe₃O₄ contains 3 Fe atoms.
• So, you need 3 Fe atoms on the left side.

Balance Oxygen (O):

• On the right side, Fe₃O₄ contains 4 oxygen atoms.
• On the left side, oxygen is present in water (H₂O).
• To balance oxygen, we need 4 molecules of H₂O on the left side:

Balance Hydrogen (H):

• On the left side, 4 H₂O molecules give a total of 8 hydrogen atoms.
• On the right side, each H₂ molecule has 2 hydrogen atoms. To balance hydrogen, we need 4 H₂ molecules:

Double-check the balance

​3Fe (s)+ 4H₂O (g) $$\rightarrow$$​​​ Fe₃O₄(s)+ 4H₂(g)​

• Iron (Fe): 3 atoms on both sides.
• Oxygen (O): 4 atoms on both sides (from H₂O and Fe₃O₄).
• Hydrogen (H): 8 atoms on both sides (from H₂O and H₂).

The equation is now balanced!