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Which of the following electrodes will act as anodes, when connected to Standard Hydrogen Electrode?

(i)Al/Al^{3+} , E^{\Theta }=-1.66

(ii)Fe/Fe^{2+} , E^{\Theta }=-0.44

(iii)Cu/Cu^{2+} , E^{\Theta }=+0.34

(iv)F_{2}(g)/2F^{-}(aq) , E^{\Theta }=+2.87

Answers (1)

The answer is the option (i) and (ii)

Explanation: They will act as anodes because both of the electrodes has a negative value of standard reduction potential.

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