Manipal MET2013ChemistryElectrochemistry
Consider the following redox reaction occurring in acidic medium The unknown standard reduction potential is
Options
- A-1.6 ~V
- B1.6 V
- C-1.52 ~V
- D1.52 V
Correct answer
D. 1.52 V
Step-by-step solution
The given half reactions are BrO ₃⁻+4 e⁻+4 H ⁺ E^ ( inV ) G^ =-n F E^ BrO ⁻+2 H ₂ O 1.50 -6 ~F BrO ⁻+ e ⁻+2 H ⁺ 1.60 -1.6 ~F 1 2 Br ₂+ H ₂ O Adding BrO ₃⁻+5 e ⁻+6 H ⁺ 1 2 Br ₂+3 H ₂ O gathered G^ =-7.6 ~F =-5 E^ F E^ = 7.6 5 =1.52 ~V gathered