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Topic: Delta G  (Read 5737 times)

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vikhas

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Delta G
« on: July 18, 2005, 05:32:44 PM »
Find Delta G of the following reaction and tell if it's spontaneous.

Cu(2+) + Fe -> Fe(2+) + Cu

Thanks in advance

Offline Qazzian

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Re:Delta G
« Reply #1 on: July 18, 2005, 05:52:32 PM »
The textbook should have a table with values you'll need for this. Since no temperature is given, I'm guessing they tell you what the delta(G) for the reactions are (Cu and Fe individually). You can add the two together to find the final delta G for the whole thing.
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Offline lemonoman

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Re:Delta G
« Reply #2 on: July 18, 2005, 06:18:59 PM »
I know the administators and moderators don't like it when people ask questions without showing work, but Qazzian already got his two cents in so I will too.

This looks kinda like an electrochemical reaction, doesn't it?

Your textbook likely has a list of 'Standard Cell Potentials" - what's the relationship between electric potential and Gibbs Free Energy?

Offline Donaldson Tan

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Re:Delta G
« Reply #3 on: July 19, 2005, 09:11:59 PM »
the following data are missing:

1. concentration of reactant species
2. reaction temperature
3. enthaly and entropy data for standard condition.

please rectify (and please show that you have at least attempted the problem).
"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006

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