This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Welcome back ~Sharon — missed you this week. 1 (f) (i) The most powerful reducing agent is the species that is most easily oxidized, which corresponds to the half-reaction with the lowest (most negative) standard reduction potential (E^). Comparing the E^ values from the table: A: Fe^2+ + 2e^- Fe (E^ = +0.27 V) - Reducing agent: Fe B: NO_3^- + 3H^+ + 2e^- HNO_2 + H_2O (E^ = +0.94 V) - Reducing agent: HNO_2 C: Cl_2 + 2e^- 2Cl^- (E^ = +1.36 V) - Reducing agent: Cl^- D: Cr_2O_7^2- + 14H^+ + 6e^- 2Cr^3+ + 7H_2O (E^ = +1.33 V) - Reducing agent: Cr^3+ E: S_2O_8^2- + 2e^- 2SO_4^2- (E^ = +2.01 V) - Reducing agent: SO_4^2- The lowest E^ value is +0.27 V, which corresponds to the Fe^2+/Fe couple. Therefore, Fe is the most powerful reducing agent. The most powerful reducing agent is $