Ugh. I'd really like to go back in time 5 years and tell my undergraduate self to study all that org chem stuff, because doing it all during 3 weeks in preparation for the final exam is super exhausting.
But, knowing myself, I would probably not have listened anyway.
penta works down the hall from Geoff Hutchinson, though, so he may be able to link me up with someone able (and hopefully willing) to proof my writeup.
Oh, no worries, I mainly only pinged you because you were already right here.
For the equilibrium
$$\ce{CaCO3(s) <=> CaO(s) + CO2(g)}$$
$\Delta H^\ominus = 178\ \mathrm{kJ\ mol^{-1}}$ and $\Delta S^\ominus = 160\ \mathrm{J\ mol^{-1}}$.
I'm asked to suppose that $1\ \mathrm{mol}$ of $\ce{CaCO3}$ and $1\ \mathrm{mol}$ of $\ce{CO2}$ are heated reversibly in a closed vessel...
@pentavalentcarbon I may just have to hope that I've gotten it laid out correctly -- I wonder if there's even anyone left at Gaussian who knows the format very well.
@hBy2Py Then it's not working properly, since I remember clearly it appearing multiple times in the middle of my chatting with people in Language Overflow