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Consider a voltaic cell constructed with...

Consider a voltaic cell constructed with the following substances:
`Cr^(3+)(aq)+3 e^- rarr Cr(s) E^circ=-0.74 V`
`MnO_4^-(aq)+8 H^+(aq)+5 e^- rarr Mn^(2+)(aq)+4 H_2 O(l)`
`E^circ=+1 . 5 1 V`
a) Which substances are oxidized and reduced in this cell?
b) Write the overall cell equation and calculate the cell potential.
c) Which are the negative and positive electrodes?
d) Write the cell notation for this voltaic cell.

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