Chemists are working on the electrochemistry of bromine species. They prepared the following electrochemical cells (Table 1) at 298 K. Table 1. Two electrochemical cells to study the electrochemistry of bromine species. Cell L: Pt(s) | Br21) | Br-(aq) (1.0 M) || Br-(aq) (x M) from [PbBr4]2-| Br2(1) | Pt(s) Cell H: Pt(s) | Br21) | Br-(aq) (x M) || BrO3-(aq) (0.43 M), H+(aq) (1.00 M) | Br2(1)| Pt(s) A concentration cell (L) where the cathode half-cell uses an equilibrium solution of [PbBr4]2-(aq) as the source of bromide ions was prepared. A galvanic cell (H), where the bromide ion concentration in the anode is equal to that in the cathode of cell L was also prepared. Given: Eºred Br2(1)/Br-(aq) = +1.07 V Given that the electrochemical cell L gives a potential of 0.0570 V, determine the concentration of bromide ions present in its cathode half-cell. ● The equilibrium concentration of Pb2+(aq) and [PbBr4]2-(aq) in the cathode half-cell of L are 0.15 M and 0.32 M, respectively. Determine the equilibrium constant for the formation of [PbBr4]2-.

Chemists are working on the electrochemistry of bromine species. They prepared the following electrochemical cells (Table 1) at 298 K. Table 1. Two electrochemical cells to study the electrochemistry of bromine species. Cell L: Pt(s) | Br21) | Br-(aq) (1.0 M) || Br-(aq) (x M) from [PbBr4]2-| Br2(1) | Pt(s) Cell H: Pt(s) | Br21) | Br-(aq) (x M) || BrO3-(aq) (0.43 M), H+(aq) (1.00 M) | Br2(1)| Pt(s) A concentration cell (L) where the cathode half-cell uses an equilibrium solution of [PbBr4]2-(aq) as the source of bromide ions was prepared. A galvanic cell (H), where the bromide ion concentration in the anode is equal to that in the cathode of cell L was also prepared. Given: Eºred Br2(1)/Br-(aq) = +1.07 V Given that the electrochemical cell L gives a potential of 0.0570 V, determine the concentration of bromide ions present in its cathode half-cell. ● The equilibrium concentration of Pb2+(aq) and [PbBr4]2-(aq) in the cathode half-cell of L are 0.15 M and 0.32 M, respectively. Determine the equilibrium constant for the formation of [PbBr4]2-.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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