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A cell constructed by coupling a standar...

A cell constructed by coupling a standard copper electrode and a standard magnesium electrode has emf of 2.7 volts. If the standard reduction potential of copper electrode is +0.34 volt, that of magnesium electrode is

A

+3.04 volts

B

-3.04 volts

C

+2.36 volts

D

-2.36 volts

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The correct Answer is:
D
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