[Fornside]

Hello all  

I have recently perfermed an experiment, a titration of HCl against a Ca(OH)2

Now i boiled the water i added the calcium hydroxide to, so lets discount that as a source of error for now.

The saturated calcium hydroxide solution was passed through a filter into a second beaker, where the titrant (HCL) was added

I was concerned with the effect carbon dioxide will have on the Ca2+ and OH- solution what reactions will occur here?, and what effect this will have on the amount of HCL i need to add, and therefore the Ksp value

I have worked out the Ksp and concentration of both ions at suturation, my KSP came out to be much larger than the liturature value for Calcium hydroxide, so im particulary interested in CO2's role in increasing the perceived KSP value

Please dont hesitate to ask for additional info as is my first post 

Thank you

[Sanger]

The equation would be as follows:
Ca(OH)₂ + CO₂  CaCO₃ + H₂O

[Borek]

How did you detect the end point?