What is the sum of the coefficients when the following equation is balanced with the simplest whole numbers? If a substance has an understood 1 as the coefficient, do not forget to add it in. Fe2O3 (s) + C (s) → Fe (s) + CO2 (g)
Number of iron (Fe) atoms: 2 on the LHS, 1 on the RHS.
Number of carbon (C) atoms: 1 on the LHS, 1 on the RHS.
Number of oxygen (O) atoms: 3 on the LHS, 2 on the RHS.
Since we have an odd number of oxygens, we should probably balance that first.
Let's balance the oxygen on the other side by multiplying by
Balance the carbon by multiplying by
Finally, balance the iron by multiplying by
This is our balanced equation in its simplest form.
The sum of the coefficients is