Which of the following metals is the best reducing agent and which is the worst? a)...

Which of the following metals is the best reducing agent and which is the worst?

a) Mn

b) Al

c) Ni

d) Cr

Solutions

Expert Solution

Eo (Mn2+/Mn) = -1.185 V
Eo (Al3+|Al) = - 1.662 V
Eo (Ni2+/Ni) = -0.25 V
Eo (Cr3+/Cr) = -0.74 V

greater Eo value means good oxidising agent
Hence worst reducing agent
Eo value is largest for Ni. SO Ni is worst reducing agent

similarly best is Al

queen_honey_blossom answered 1 year ago

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