What is the value of x for balanced chemical equation 3Fe + xH$$_2$$​​O → Fe$$_3$$​​O$$_4$$​​+ 4H$$_2$$​​?

Correct option is D

The correct answer is: (D) 4

Explanation:
We are given the unbalanced chemical equation:

$$3Fe + xH_2O \rightarrow Fe_3O_4 + 4H_2$$​

Now, let's balance this equation step by step:

1. Iron (Fe): On the left side, we have 3 Fe, and on the right side, in$$Fe₃O₄,$$​there are 3 Fe atoms. So, iron is balanced.

2. Hydrogen (H): On the right side, we have 4 H₂ molecules, meaning there are 8 hydrogen atoms in total. To balance hydrogen, we need 8 hydrogen atoms on the left side. Since each H₂O molecule contains 2 hydrogen atoms, we need 4 H₂O molecules. Therefore, x = 4.

3. Oxygen (O): On the right side, in $$Fe₃O₄$$​, there are 4 oxygen atoms. On the left side, from the 4 H₂O molecules, we also have 4 oxygen atoms, which balances oxygen.

So, the balanced equation is:

$$3Fe + 4H_2O \rightarrow Fe_3O_4 + 4H_2$$​

Thus, the value of x is 4.​