I eliminated nicotine, anabasine, and anatabine via locating molar volume data that was generally in the 150+ cm3 range.
This leaves nornicotine, for which I located a molar volume range that fits. So while I can't find the page with the 145.845 cm3 reference, I believe that this number is meant to be the molar volume (value) for nornicotine.
Also makes sense in that ideality would suggest quite similar molar volumes for nicotine, anabasine, and anatabine seeing as they all have molecular weights from around 160 - 162, while nornicotine's molecular mass is lower at around 148, which would (again assuming ideality) suggest a molar volume around 10% lower than the other alkaloids of interest. The others cluster from 153 to 160 (the difference being probably due to non-ideality). Chop 10% off these values, and we get a number pretty close to 145.845, which again, I believe is the value you got for nornicotine's molar volume (value).
This leaves nornicotine, for which I located a molar volume range that fits. So while I can't find the page with the 145.845 cm3 reference, I believe that this number is meant to be the molar volume (value) for nornicotine.
Also makes sense in that ideality would suggest quite similar molar volumes for nicotine, anabasine, and anatabine seeing as they all have molecular weights from around 160 - 162, while nornicotine's molecular mass is lower at around 148, which would (again assuming ideality) suggest a molar volume around 10% lower than the other alkaloids of interest. The others cluster from 153 to 160 (the difference being probably due to non-ideality). Chop 10% off these values, and we get a number pretty close to 145.845, which again, I believe is the value you got for nornicotine's molar volume (value).
Last edited: