Thermodynamics: Reduction Potential question

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The forum discussion centers on a question regarding reduction potential in thermodynamics, specifically evaluating the correct answer between options a and b. Participants clarify that a good reducing agent must have a negative or less positive reduction potential. The confusion arises from the interpretation of the question, with some believing it asks for the oxidizing agent for BH2, which would exclude element Y due to its positive reduction potential. Ultimately, the consensus leans towards option b as the correct answer based on the criteria for reducing agents.

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TytoAlba95
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The answer key says the correct option should be a, but I think it should be b. Because Y has a reduction potential same as the element B.

An element is a good reducing agent only if its reduction potential is negative or less positive.
 
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Then why have you chosen the most positive one?

The question seems unclear. What are you being asked to do - reduce B or oxidise BH2? I read it as reducing B, but then you want an electron donor, not an acceptor. Have I misunderstood?
 
I think it is asking which out of the three can oxidize BH2. In that case, I think (b) is the correct option.
Thanks for pointing out, I got confused after reading the question. I really is unclear.

But if they are asking for the oxidant, shouldn't Y element be excluded?
 

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