Balance the following chemical equations including the physical states. (AS1)

Fe + O₂ Fe₂O₂

Fe + O₂ Fe₂O₂

Balanced equation: 2Fe_(s) + O_2(g) Fe₂O_2(s)

Explanation:

⇒Step 1: Write the given unbalanced equation

Fe + O₂ Fe₂O₂

⇒Step 2: Compare the number of atoms of reactants with the number of atoms of products.

⇒Step 3: Now, first we consider the element having unequal no. of atoms on both sides. Thus, let us consider Fe atom. If we multiply 2 in the reactant (in Fe), we will get the equal number of atoms as in product (in Fe₂O₂)

⇒Step 4: Write the resulting equation:

2Fe + O₂ Fe₂O₂

⇒Step 5: Now check whether the equation is balanced or not by comparing the atoms

We find that the equation is balanced now.

⇒Step 6: Write down the final balanced equation:

2Fe + O₂ Fe₂O₂