NEET2020ChemistryElectrochemistryActual
Identify the reaction from following having top position in EMF series (Std.red. potential) according to their electrode potential at 298   K .
Options
- AMg 2 + + 2 e - → Mg ( s )
- BFe 2 + + 2 e - → Fe ( s )
- CAu 3 + + 3 e - → Au ( s )
- DK + +   e - → K ( s )
Correct answer
C. Au 3 + + 3 e - → Au ( s )
Step-by-step solution
According to electrode potential series, Au + 3 + 3 e - → Au ( s ) (has the highest position ⇒   max .   SRP )