Explanation: According to law of conservation of matter both the left hand side and right hand side shoul be having same number of elements. The Imbalance chemical equation was as follow,
Fe₂O₃ + CO → Fe + CO₂
L.H.S R.H.S Fe 2 1 O 4 2 C 1 1
So, Iron being not equal were made equal by multiplying Fe by 2. Hence,
Fe₂O₃ + CO → 2 Fe + CO₂
L.H.S R.H.S Fe 2 2 O 4 2 C 1 1
Now, Oxygen is balanced by multiplying CO₂ by 2, Hence,
Fe₂O₃ + CO → 2 Fe + 2 CO₂
L.H.S R.H.S Fe 2 2 O 4 4 C 1 2
Now, balancing carbon by multiplying CO by 2, hence,
Fe₂O₃ + 2 CO → 2 Fe + 2 CO₂
L.H.S R.H.S Fe 2 2 O 5 4 C 2 2
Again Oxygen got imbalanced, so again multiply CO₂ by 3, hence,
Fe₂O₃ + 2 CO → 2 Fe + 3 CO₂
L.H.S R.H.S Fe 2 2 O 5 6 C 2 3
Again Carbon got disturbed, Multiply CO by 3, hence,
