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The standard potential of the cell in wh...

The standard potential of the cell in which the following reaction occurs `H_2 (g,1atm) + Cu^(2o+)(1M)rarr2H^(o+)(1M)+Cu(S), (`E^0Cu = 0.34V)` is

A

` -0.34 V`

B

0.34 V

C

0.17 V

D

`-0.17 V`

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