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Relative Reduction potential - Okay what am i doing wrong here someone help me o

ID: 558232 • Letter: R

Question

Relative Reduction potential - Okay what am i doing wrong here someone help me out..

My reduction Potentials are:

Relative Reduction Potential Assuming standard conditions, and considering the table of standard reduction potentials for half- reactions, given in your text, rank the following species according to their relative strength as reducing agents. For example, the most powerful reducing agent would be given rank "1", and the least 6 OH- (basic half-cell solution) 3Cr3+ (acidic half-cell solution) 5Pb2+ (acidic half-cell solution)

Explanation / Answer

Oxidising agents are the one which accepts electron readily itself undergoing reduction and oxidises the reagent.

Now the element which is most easily reduced has positive reduction potential. Between two element the one having higher positive reduction is having higher capability of getting reduced and is a better oxidising agent or weaker reducing agent.

Thus when we go through the list:

In the list OH- has only positive reduction potential hence it is the relatively most powerful oxidising agent or least powerful reducing agent. And K has least reduction potential hence it the relatively stongest reducing agent or weakest oxidising agent.