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Aluminium displaces hydrogen from acids,...

Aluminium displaces hydrogen from acids, but copper does not. A galvanic cell prepared by combining `Cu//Cu^(2+)` and `Al//Al^(3+)` has an emf of 2.0 V at 298K. If the potential of copper electrode is +0.34V, that of Aluminium electrode is

A

`-2.3V`

B

`+2.34V`

C

`-1.66V`

D

`1.66V`

Text Solution

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The correct Answer is:
C
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