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Spontaneous Reaction Multiple Choice Help

Which reaction will occur nonspontaneously?
a. Au3+ + 3e- → Au
b. Mg + 2H+ → Mg2+ + H2
c. F2 + 2e- → 2F-
d. Li+ + e- → Li
e. 2Na + Cl2 + 2e- → 2NaCl

They gave no Gibbs energy or anything related just the equations, how would you work out the answer based on the equations?

Thanks :smile:
Are you sure you haven't got (or allowed) a table of electrode potentials?
Nope :frown:
Original post by EierVonSatan
Are you sure you haven't got (or allowed) a table of electrode potentials?
You know gibbs needs to be below zero, and presumably only 1 answer is correct.
You haven't got enthalpy values or temp values presumably.
So you need the biggest entropy increase - and that reaction will be the one producing a gas.

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