|April 25th, 2016, 11:49 PM||#1|
Joined: Apr 2016
The magnitudes of the standard potentials of two metals A and B were determined to be:
1) A^2+ + 2e ---> A E=0.50V
2) B^3+ + 3e ---> B E=0.54V
When the two electrodes are connected, current flows from B to A in the external circuit. When the electrode (1) is connected to the standard hydrogen electrode, current flows from the SHE to A.
i) What are the signs of E of the two half reactions?
ii) What is the standard cell potential for the cell constructed from those two electrodes?
Am I correct in saying that since the current is flowing from B to A this means that B undergoes oxidation and so 2) is the anode therefore 1) is the cathode?
How am I meant to work out the signs for the half reactions?