AP Chemistry

Q - An electrochemical reaction occurs between an unknown element and zinc. The half-cell reaction for the zinc is:
Zn(s) → Zn2+(aq) + 2e−
The cell potential for the reaction is Eºcell = 1.83 V.

Is the reaction spontaneous or nonspontaneous? Explain.

What is the half-cell potential of the unknown species?

What is the identity of the unknown element?

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  1. The three previous posts are all about electrochemistry. They are general with nothing to indicate what your problem is with these. Bob Pursley answered the first one. I'll be glad to help you through these but I'm not inclined to write a chapter or two, which really is what is required. We can help but we don't want to do your homework.

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  2. I think that the reaction is spontaneous because no outside force is required for it to take place. Is this correct?

    I'm not sure about the other two parts to the question. Can you help me?

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