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Topic: Heat of Formation Problem  (Read 7926 times)

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Offline wh33landaxel

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Heat of Formation Problem
« on: April 16, 2009, 04:02:48 PM »
What is the heat of formation for Copper Hydroxide solid, I've been looking everywhere for this and I can't seem to find it. I'm pretty sure you can't separate it into copper and hydroxide ions since Copper Hydroxide is a solid.  Cu(OH)2. To be more specific I need the specific heat of Cu(OH)2 in kJ/mol
« Last Edit: April 16, 2009, 04:27:13 PM by wh33landaxel »

Offline AccordionGirl

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Re: Heat of Formation Problem
« Reply #1 on: April 16, 2009, 04:41:27 PM »
Is there an equation it's in where you know the heat of reaction, so you can be all crafty and use heat of rxn = heat of formation of products - reactants?
"Don't worry; your bagel will never turn into nitric acid and kill you." -Roald Hoffman

Offline wh33landaxel

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Re: Heat of Formation Problem
« Reply #2 on: April 16, 2009, 04:54:52 PM »
The ionic equation I'm using with the heat of reaction equation is as follows

Cu2+ + 2Na+ + 2OH-  :rarrow: Cu(OH)2(s) + 2Na+ 2NO3- everything besides Cu(OH)2 is aqueous. Is there any way to find it through this?

Offline AccordionGirl

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Re: Heat of Formation Problem
« Reply #3 on: April 27, 2009, 08:22:11 PM »
Wow, I forgot about this site. Sorry if you've given up on me!
I'm still willing to help if I can.
Do you know the heat of reaction? If so, you can find the heat of formation of Cu(OH)2 using this equation:
heat of reaction = (heat of formation of Cu(OH)2 + (Hf NO3-)X2) - (Hf Cu2+ + (Hf OH-)X2).
notice, you don't even have to bother with the Na, because it is the same on both sides of the equation, and therefore will cancel out.
"Don't worry; your bagel will never turn into nitric acid and kill you." -Roald Hoffman

Offline amitdmishra

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Re: Heat of Formation Problem
« Reply #4 on: July 13, 2009, 02:50:11 AM »
you will find heat of formation on http://www.processglobe.com/Enthalpy_Formation.aspx

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