Calculate the standard emf of a cell that uses the Mg/Mg2+ and Cu/Cu2+ half-cell reactions at 25°C.?

Wow That is deep.

Calculate the standard emf of a cell that uses the Mg/Mg2+ and Cu/Cu2+ half-cell reactions at 25°C.?
Either your a procrastinating student or a experimenting professor seeing what are the capabilities of the population of the Yahoo Answers answering community. Any ways from what I understand is that by you including information on the temperature you are giving a qualitative variable that should implie you need a experiement for this question but then you provide no other vairiable such as concentration.





Cu + Mg2 --------%26gt; Cu2 + Mg


Cu --------------%26gt; Cu2 + 2e


Mg2 + 2e --------%26gt; Mg





Cu --------------%26gt; Cu2 + 2e (E = +0.35)


Mg2 + 2e --------%26gt; Mg (E = -2.36V)





+0.35 + (-2.36) = -2.01V


--------------------------------------...


Mg + Cu2 --------%26gt; Mg2 + Cu


Mg --------------%26gt; Mg2 + 2e


Cu2 + 2e --------%26gt; Cu





Mg --------------%26gt; Mg2 + 2e (E = +2.36V)


Cu2 + 2e --------%26gt; Mg (E = -0.35V)





+2.36 + (-0.35) = +2.01V





It's possible that this is not what you need, if you explain your question better maybe someone could help you better.


Hopefully this helps.

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