Reduction through constant current electrolysis
a) How much Cr3+ was reduced to Cr2+?
b) A few seconds after the electrolysis was stopped, the potential of the cell came to rest
at -0.524 volts. How much Cr3+ actually remains in the solution?
c) What was the original Cr3+ concentration?
See attachment for full solutions.
Cell: Pt/H2(1 atm)/H+(aq)(1.0 M)/Cr3+(aq)(??? M)/Pt ...
The reduction through constant current electrolysis is found. The solution contains answers, explanations and calculations in two pages.