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Which one is the best reducing agent?

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INeedSerotonin:


Hello. All of these reactions have their voltage on the right. I was asked "Is Ni2+ the best reducing agent?", to which I answered "yes", and the exercise said "no."

I don't know why this is so. If nickel has the most negative reducing potential, it looks to me like it wants to oxidize. And if it wants to do so, than it is a great reducing agent.

Am I right?

chenbeier:
It would be the opposit. Nickel metal would be the best reducing agent. Silver is noble, nickel innoble.

INeedSerotonin:

--- Quote from: chenbeier on February 16, 2020, 01:28:50 PM ---It would be the opposit. Nickel metal would be the best reducing agent. Silver is noble, nickel innoble.

--- End quote ---

It does make sense! I guess the answer I was given is wrong then. Thank you!  ;)

Borek:
Question asked about metallic Ni or Ni2+? These are quite different things.

INeedSerotonin:

--- Quote from: Borek on February 16, 2020, 04:42:47 PM ---Question asked about metallic Ni or Ni2+? These are quite different things.

--- End quote ---

The exercise mentions Ni2+.

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