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Author Topic: Zinc more reactive than Copper - Why?  (Read 6290 times)

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sodiumman

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Zinc more reactive than Copper - Why?
« on: November 08, 2009, 12:30:05 PM »

Hi Forum,
I teach hs chem in Australia.  Aware of the 3d10, 4s2 structure of zinc, so why is it so much more reactive than copper, that seems to have incomplete shells?
Ta,Dave
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Schrödinger

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Re: Zinc more reactive than Copper - Why?
« Reply #1 on: November 08, 2009, 08:06:06 PM »

Reactivity doesn't depend on electronic configuration alone. There are other factors like IE, HE and SE.

IE= Ionization enthalpy
HE = Hydration enthalpy
SE = Sublimation enthalpy.

You have to compare the Eo values as well.
This incorporates all the 3 factors.

Thus, you get a more accurate picture of reactivity.
Also, refer to the reactivity series to see that Zn well above Cu.
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