MHT CET202613 April 2026Evening ShiftChemistryElectrochemistryActual
Which of the following reaction is possible at anode?
Options
- AF ₂ + 2e^- 2 F ^-
- B2 H ^+ + 1 2 O ₂ + 2e^- H ₂ O
- CFe ²⁺ Fe ³⁺ + 1e^-
- DCu ²⁺ + 2e^- Cu (s)
Correct answer
C. Fe ²⁺ Fe ³⁺ + 1e^-
Step-by-step solution
At the anode, oxidation takes place. Oxidation is defined as the loss of electrons. Analyzing the given reactions: F ₂ + 2e^- 2 F ^- involves the gain of electrons, hence it is a reduction reaction. 2 H ^+ + 1 2 O ₂ + 2e^- H ₂ O involves the gain of electrons, hence it is a reduction reaction. Fe ²⁺ Fe ³⁺ + 1e^- involves the loss of an electron, hence it is an oxidation reaction. Cu ²⁺ + 2e^- Cu (s) involves the gain of electrons, hence it is a reduction reaction. Since only the third reaction represents oxidation,