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I'm working on an investigation where I am studying the decomposition of copper(II) carbonate and iron(II) carbonate. I am having trouble finding data on the standard enthalpies and entropies of these two substances. Although I have the temperatures of decomposition for them, I still need the enthalpy and entropy values as part of my report. Can you help or direct me to any sources?

Ulex writes ...
The Nuffield Book of Data lists the relevant data for iron(II) carbonate as –740.6 kJ mol^-1 and 92.9 J mol^-1 K^-1 respectively.
 
The data for copper(II) carbonate are not listed, in fact there is no mention of copper(II) carbonate at all. There is nothing about this compound in the on-line NIST Chemistry WebBook either.
 
I strongly suspect that this is because ‘normal’ copper(II) carbonate is unknown. What we normally call copper(II) carbonate is actually a basic carbonate which contains not only CuCO₃ but also Cu(OH)₂ and water.
 
If your library has a copy of Handbook of Chemistry and Physics published by CRC, this might have some data but I rather suspect it won’t!

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updated: 08 March 2006