Respuesta :
NaBrO + 2Fe₂(SO₄)₃ + 12NaOH = NaBrO₃ + 4Fe(OH)₂ + 6Na₂SO₄ + 2H₂O
BrO⁻ + 4OH⁻ - 4e⁻ = BrO₃⁻ + 2H₂O k=1
Fe³⁺ + 2OH⁻ + 1e⁻ = Fe(OH)₂ k=4
BrO⁻ + 12OH⁻ + 4Fe³⁺ = BrO₃⁻ + 2H₂O + 4Fe(OH)₂
BrO⁻ + 4OH⁻ - 4e⁻ = BrO₃⁻ + 2H₂O k=1
Fe³⁺ + 2OH⁻ + 1e⁻ = Fe(OH)₂ k=4
BrO⁻ + 12OH⁻ + 4Fe³⁺ = BrO₃⁻ + 2H₂O + 4Fe(OH)₂
Answer : The balanced chemical equation in a basic solution will be,
[tex]BrO^-+4OH^-+4Fe^{3+}\rightarrow BrO_3^-+2H_2O+4Fe^{2+}[/tex]
Explanation :
Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.
Rules for the balanced chemical equation in basic solution are :
- First we have to write into the two half-reactions.
- Now balance the main atoms in the reaction.
- Now balance the hydrogen and oxygen atoms on both the sides of the reaction.
- If the oxygen atoms are not balanced on both the sides then adding water molecules at that side where the more number of oxygen are present.
- If the hydrogen atoms are not balanced on both the sides then adding hydroxide ion [tex](OH^-)[/tex] at that side where the less number of hydrogen are present.
- Now balance the charge.
The oxidation-reduction half reaction will be :
Oxidation : [tex]BrO^-+4OH^-\rightarrow BrO_3^-+2H_2O+4e^-[/tex]
Reduction : [tex]Fe^{3+}+1e^-\rightarrow Fe^{2+}[/tex]
In order to balance the electrons, we multiply the reduction reaction by 4 and then added both equation, we get the balanced redox reaction.
The balanced chemical equation in a basic solution will be,
[tex]BrO^-+4OH^-+4Fe^{3+}\rightarrow BrO_3^-+2H_2O+4Fe^{2+}[/tex]
