Oxidation and Reduction A galvanic cell was constructed using the Ra2+/Ra and T13+/TI redox couples. The half-reactions

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Oxidation And Reduction A Galvanic Cell Was Constructed Using The Ra2 Ra And T13 Ti Redox Couples The Half Reactions 1 (79.21 KiB) Viewed 41 times

Oxidation and Reduction A galvanic cell was constructed using the Ra2+/Ra and T13+/TI redox couples. The half-reactions occurring in this galvanic cell are as follows: Ra(s) Ra2+ (aq) + ---> 2 e TI³+ (aq) + 3 e -------> Tl(s) In this question, assume the electrodes have been connected directly, without the voltmeter in the circuit acting as a resistance. Use this information to identify the following on the representation of this electrochemical cell shown below. (i) the contents and the concentration of the left-hand solution, assuming that the cell is operating under standard conditions (2 marks) + (ii) the anode and the cathode and their sign (2 marks) (ii) the direction of ion flow (showing correct ions) in the salt-bridge, assuming that the salt bridge contains aqueous KNO3 ie K* and NO3 ions (2 marks) (iv) the direction of flow of electrons (1 mark) (v) the half-reaction under the left-hand beaker (1 mark) Cell Representation D-type of electrode (anode or cathode?) and sign of electrode C-type of electrode (anode or cathode?) and sign of electrode A- Contents B-Concentration A= B= C= D= E= F= G= H= H-half-reaction [A] +3.54 V ◆ Ra