I have to write the cell notation and find the emf.
Cr2++ 2e- --> Cr (-0.91v)
Zn2+ + 2e- --> Zn (-0.76v)
Cu2+ + 2e- --> Cu (+0.34v)
Fe3+ + e- --> Fe2+ (+0.77v)
MnO4 - + 8H+ + 5e- --> Mn2+ + 4H2O (+1.51v)
Cl2 + 2e- --> 2Cl- (+1.36v)
To find the emf for each one you just subtract the equation with the more positive electrode potential from the one with the less positive I think?
For cell notation, you need to find out what type of electrolysis it is, either metal, gas or redox. If it is gas or redox you need and inert electrode- usually platinum is best
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