Solubility of Ca[2+]
I'm doing a school project, where the task is to find out at what partial pressure of carbon dioxide, the solubility of Ca[2+] starts to decline, due
to an increased concentration of CO3[2-] in the solution. My pH is 12.43.
I've made several calculations on this, and I've managed to make my calculations match the equilibrium diagram. However, according to the math, this
will begin to occur at pressures as low as log p = -13.7. I can't find any errors in my calculations, and the pH is rather high, so large amounts will
disolve, but it still seems very low. Is this really plausible?
The graph in question:
http://lanfear.c0la.se/CA-LGSOL.JPG
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