Which of the following options are showing an oxidation reaction-Mg -s- - Mg-2- - 2e-Mg -s- - 2e- Mg-2-Zn -s- - Zn-2- - 2e-Zn -s- - 2e- Zn-2-

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Applications of Electrolysis and Electrolytic Cell

Which of the ...

Question

Which of the following options are showing an oxidation reaction?

$M g (s) \to M g^{2 +} + 2 e^{-}$

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$M g (s) + 2 e^{-} \to M g^{2 +}$

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$Z n (s) \to Z n^{2 +} + 2 e^{-}$

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$Z n (s) + 2 e^{-} \to Z n^{2 +}$

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Z n^{2 +} + 2 e^{-} \to Z n (s); E^{o} = - 0.76 V

C a^{2 +} + 2 e^{-} \to C a (s); E^{o} = - 2.87 V

M g^{2 +} + 2 e^{-} \to M g (s); E^{o} = - 2.36 V

N i^{2 +} + 2 e^{-} \to N i (s); E^{o} = - 0.25 V

M g^{2 +} + 2 e^{-} \to M g; E^{0} = - 2.37 V

Z n^{2 +} + 2 e^{-} \to Z n; E^{0} = - 0.76 V

F e^{2 +} + 2 e^{-} \to F e; E^{0} = - 0.44 V

Standard reduction potential values for the electrodes are given below.

$M g^{2 +} + 2 e^{-} \to M g;$ $E_{r e d}^{o} =$ $- 2.37$ V

$Z n^{2 +} + 2 e^{-} \to Z n;$ $E_{r e d}^{o} =$ $- 0.76$ V

$F e^{2 +} + 2 e^{-} \to F e;$ $E_{r e d}^{o} =$ $- 0.44$ V

Which of the following statement is correct ?

Z n^{2 +} + 2 e^{-} \to Z n (s); E^{0} = - 0.76 V

C a^{2 +} + 2 e^{-} \to C a (s); E^{0} = - 2.87 V

M g^{2 +} + 2 e^{-} \to M g (s); E^{0} = - 2.36 V

N i^{2 +} + 2 e^{-} \to N i (s); E^{0} = - 0.25 V

Z n^{2 +} (a q) + 2 e^{-} \to Z n (s)

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