Match the chemical reactions taking place at the Anode of the cell with the correct cell in which the reaction occurs. No. Anodic Reaction No. Cell A Zn(Hg) + 2OH^- ZnO_ (s) + H₂O + 2e^- P Fuel cell B 2H₂(g) + 4OH^- 4H₂O(l) + 4e^- Q Leclanche cell C Zn_ (s) Zn²⁺ + 2e^- R Nickel Cadmium storage cell D Cd_ (s) + 2OH^- CdO_ (s) + H₂O(l) + 2e^- S Mercury cell

Step-by-step solution

The anodic reaction Zn ( Hg )+2 OH ⁻ ZnO _ ( S ) + H ₂ O +2 e occurs in the Mercury cell (S). The anodic reaction 2 H ₂(g)+4 OH ⁻ 4 H ₂ O (l)+4 e occurs in the Fuel cell (P). The anodic reaction Z n_ (S) Z n²⁺+2 e occurs in the Leclanche cell (Q). The anodic reaction Cd _ (S) +2 OH ⁻ CdO _ (S) + H ₂ O (l)+2 e occurs in the Nickel Cadmium storage cell (R). Matching these gives A=S, B=P, C=Q, D=R. Answer: A = S B = P C = Q D = R