Calculate the standard cell potential given the following standard reduction potentials?
Al3+ + 3e- ----> Al; Eo= -1.66V
Ag+ + e- ------> Ag; Eo= +0.799V
Tarnish on silver is the compound Ag2O. A tarnished silver spoon is placed in an aluminum pan of boiling water. When enough salt is added so that the solution conducts electricity, the tarnish disappears.
Imagine that the two halves of this redox reaction were separated and connected with a wire and a salt bridge.
Answer:
the standard cell potential or emf is simply = oxid pot. of anode -oxid.pot. of the cathode
the oxid pot is the add inverse of the red pot and sice it became a redox reaction so the anode is the metal (half cell)which have higher oxid pot which means (AL)
so emf=1.66-(-0.799)=2.459
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