Question

Помогите расставить коэффициенты методом электронного баланса Fe(NO3)2 = Fe2O3+ NO2 + O2

Answer 1

4Fe(NO3)2 -> 2Fe2O3 + 8NO2 + O2

Fe(+2) -1e = Fe(+3)   4   в-ль, ок-ие

O(-2) +2e = O(0)       2    ок-ль, в-ие

Answer 2

Balancing the Chemical Equation Fe(NO3)2 = Fe2O3 + NO2 + O2 using the Electron Balance Method

To balance the chemical equation Fe(NO3)2 = Fe2O3 + NO2 + O2 using the electron balance method, we need to ensure that the same number of each type of atom is present on both sides of the equation and that the total charge is balanced.

The given unbalanced equation is: Fe(NO3)2 = Fe2O3 + NO2 + O2

Steps to Balance the Equation:

1. Identify the Elements and Their Oxidation States: - Iron (Fe) can have an oxidation state of +2 or +3. - Nitrogen (N) in nitrate (NO3-) has an oxidation state of +5, and in nitrogen dioxide (NO2), it has an oxidation state of +4. - Oxygen (O) typically has an oxidation state of -2.

2. Write the Half-Reactions: - First, we need to write the half-reactions for the oxidation and reduction processes.

Oxidation Half-Reaction: Fe → Fe3+ + 3e-

Reduction Half-Reaction: 2NO3- → N2O5 + 5e-

3. Balance the Number of Electrons: - Multiply the oxidation half-reaction by 5 and the reduction half-reaction by 3 to balance the electrons.

Balanced Oxidation Half-Reaction: 5Fe → 5Fe3+ + 15e-

Balanced Reduction Half-Reaction: 6NO3- → 3N2O5 + 15e-

4. Combine the Half-Reactions: - Now, combine the balanced half-reactions to form the overall balanced equation.

Overall Balanced Equation: 5Fe + 6NO3- → 5Fe3+ + 3N2O5

Conclusion

The balanced chemical equation using the electron balance method for the given reaction Fe(NO3)2 = Fe2O3 + NO2 + O2 is: 5Fe + 6NO3- → 5Fe3+ + 3N2O5