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2Al(s)+2Cu^(2+)(aq)rarr2Al^(3+)(aq)+2Cu(...

`2Al(s)+2Cu^(2+)(aq)rarr2Al^(3+)(aq)+2Cu(s)`
What is the value of `E^(@)` for a volaic cell based on this reaction?
`{:("Reaction",E^(@)),(Cu^(2+)(aq)+2e^(-)rarrCu(s),+0.34V),(Al^(3+)(aq)+3e^(-)rarrAl(s),-1.66V):}`

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