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Topic: HCl Saturation in Methanol  (Read 4731 times)

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Offline mehcp

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HCl Saturation in Methanol
« on: October 04, 2013, 01:02:22 AM »
I want to prepare Hydrogen Chloride saturated Methanol by bubbling dry HCl gas into 1 L Methanol 0-4°C.  I'm adding concentrated HCl to Calcium Chloride drop-wise via an addition funnel (as noted here http://curlyarrow.blogspot.com/2009/03/how-to-make-dry-hcl-gas.html and here http://chemtips.wordpress.com/2012/12/18/snap-crackle-pop-anhydrous-hcl-generation/).

I'd like to know the following:
  • How much CaCl2 and HCl should be required to saturate 1 L methanol with HCl gas?
  • How long should it take to reach saturation?
  • What is the saturation concentration of HCl gas in Methanol?
  • I imagine the concentration can be verified via titration, but what is the best method for doing so?
  • I am using a glass Pasture pipette to bubble in the HCl gas, but it seems a diffuser of some sort would work better to get more of the gas into solution.  Are there any recommendations or suggestions for this purpose?  Or should I just draw out the pipette to a finer tip to get smaller bubbles?
« Last Edit: October 04, 2013, 01:14:39 AM by mehcp »

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