NEET Chemistry Cell Reactions MCQ Question
Which of the following is the cell reaction that occurs when the following half-cells are combined? I₂ + 2e⁻ → 2I⁻ (1 M) ; E° = +0.54 V Br₂ + 2e⁻ → 2Br⁻ (1 M) ; E° = +1.09 V
2Br⁻ + I₂ → Br₂ + 2I⁻
I₂ + Br₂ → 2I⁻ + 2Br⁻
2I⁻ + Br₂ → I₂ + 2Br⁻
2I⁻ + 2Br⁻ → I₂ + Br₂
Correct Answer
Detailed Explanation
The cell reaction is determined by combining the half-reactions such that the electrons cancel out. The more positive E° value indicates the reduction reaction.
Found an issue with this question?
Related Questions
More from Electrochemistry
Calculate the emf of the cell in which of the following reaction takes place Ni(s) + 2Ag⁺(0.002M) ⟶ Ni²⁺(0.160M) + 2Ag(s) Given that E°cell = 1.05V
The molar conductance of NaCl, HCl and CH₃COONa at infinite dilution are 126.45, 426.16 and 91.0 S cm² mol⁻¹ respectively. The molar conductance of CH...
Given below are half cell reactions: MnO₄⁻ + 8H⁺ + 5e⁻ → Mn²⁺ + 4H₂O, E° = +1.51 V 1/2 Ω₂ + 2H⁺ + 2e⁻ → H₂O, E° = +1.23 V Will the permanganate ion...