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Question
The standard electrode potential (E0) values of Al3+/Al, Au3+/Au and Pb2+/Pb are −1.66 V, 1.50 V and −0.126 V, respectively. The CORRECT increasing order of reducing power of the metal is:
Options
Au < Pb < Al
Pb < Au < Al
Au < AI < Pb
Al < Pb < Au
MCQ
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Solution
Au < Pb < Al
Explanation:
The metal's reducing power is proportional to its reduction potential.
As a result, the decreasing power order is Au < Pb < Al.
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Redox Reaction and Electrode Potential
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