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  • Identify the reaction from following having top position in EMF series (std.red.potential) according to their electrode potential at 298 K.  Optio

Identify the reaction from following having top position in EMF series (std.red.potential) according to their electrode potential at 298 K.

 

Option: 1

Fe^{2+}+2e^{-}\rightarrow Fe_{(s)}
 


Option: 2

Au^{2+}+3e^{-}\rightarrow Au_{(s)}


Option: 3

K^{+}+1e^{-}\rightarrow K_{(s)}

 


Option: 4

Mg^{2+}+2e^{-}\rightarrow Mg_{(s)}


Answers (1)

best_answer

Au is the least reactive metal among Fe, K and Mg.

Therefore, Au^{2+}+3e^{-}\rightarrow Au_{(s)} will have the greatest reduction potential.

Hence, the correct answer is option 2.

Posted by

avinash.dongre

View full answer

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