Imagine how Einstein felt when his calculations matched his test results perfectly when he measured the bending of light around the sun. Now that was true beauty.
Very nice explanation! I saw this as a student-assistant the other week and I hadn't worked with it before. I wish I'd seen this video before assisting the students. Thanks for the vid!
It is interesting that your quantitative weight of water looked like only about 5 mL in the trap - pretty heavy water, man! A very informative demonstration of the actual function of this interesting piece of glassware. I never actually understood how we rely upon the very odd situation where an azeotropic mixture can be immiscible at room temperature.
your a really good teacher dude. I thought I knew what the dean stark trap was for but the refluxing thing is really cool.. now only if I could find an easy source of toluene in Australia, and afford a dean stark trap haha
Good detail video on Dean Stark, do you think we should cover the trap with wool and aluminium foil for the more efficiency to trap vapours in stark apparatus?
Being interested in essential oil extraction I have done a bit of research on steam distillation. They generally seem to run the steam out a tube to cool it down and collect it after. Since the essential oil is heavier than water would you be able to use this device to collect it? If so it would seem preferable since you could use a smaller amount of water.
I think so yes, although youd want to have a pretty decent distillation/reflux apparatus. I recently found an anti-splash adapter with steam outlet that has come into use pretty handy
There are so many different styles of condensers available to use with something like the Dean-Stark trap. Why did you choose that type, other than you had it? Also, how long do you estimate the reflux ran? Always good content, thanks!
Only m-xylene forms azeotrope with water and the b.p. of the azeotrope is noticeably higher (92 °C) compared to toluene/water (84.1 °C) - this will lead to more melting and decomposition. Alternative solvents may be benzene (69.3 / 80.2 C), chloroform (56.1 / 61.2 C) and carbon tetrachloride (66.8 / 76.8). DCM could be an interesting alternative but the b.p. of azeotrope is very low and contains very little water so the drying would take ages.
The Dean-Stark Trap is definitely one of the most underrated lab glassware pieces
Dean stark trap is one of the most underrated pieces of glassware
That measurement of 8.6g made me cry, damn. SCIENCE
+Misa Toman true beauty
Imagine how Einstein felt when his calculations matched his test results perfectly when he measured the bending of light around the sun. Now that was true beauty.
@@mrchangcooler didn't that happen after his death tho?
Very nice explanation! I saw this as a student-assistant the other week and I hadn't worked with it before. I wish I'd seen this video before assisting the students. Thanks for the vid!
you should have so many more views. your videos are amazing!
that 8.6 was beautiful, man
It is interesting that your quantitative weight of water looked like only about 5 mL in the trap - pretty heavy water, man!
A very informative demonstration of the actual function of this interesting piece of glassware. I never actually understood how we rely upon the very odd situation where an azeotropic mixture can be immiscible at room temperature.
AddisonPhilips The water is heavier becausw of the toluene.
your a really good teacher dude. I thought I knew what the dean stark trap was for but the refluxing thing is really cool.. now only if I could find an easy source of toluene in Australia, and afford a dean stark trap haha
try Bunnings !
Very nice and informative vidoes you makes. Great work
Good detail video on Dean Stark, do you think we should cover the trap with wool and aluminium foil for the more efficiency to trap vapours in stark apparatus?
hey nice yield of water there, right on the dot. xD
+buknolan Yes, the rarest compound in the world. Thirsty? :D
Love your videos.
I'm trying to think of an excuse to buy a Dean Stark Trap.. Idk why, just looks like a pretty cool piece of apparatus.
Being interested in essential oil extraction I have done a bit of research on steam distillation. They generally seem to run the steam out a tube to cool it down and collect it after. Since the essential oil is heavier than water would you be able to use this device to collect it? If so it would seem preferable since you could use a smaller amount of water.
I think so yes, although youd want to have a pretty decent distillation/reflux apparatus. I recently found an anti-splash adapter with steam outlet that has come into use pretty handy
Sir explain preparation of
2 iso Propoxy Ethanol
how long did the azeotropic distillation take?
There are so many different styles of condensers available to use with something like the Dean-Stark trap.
Why did you choose that type, other than you had it? Also, how long do you estimate the reflux ran?
Always good content, thanks!
So how would you separate the oxalic acid from the other stuff in bar keeper's friend?
very nice !
I love it, very interesting.
Would it be possible to make anhydrous phosphoric acid using this method?
I believe you would form pyrophosphates/polyphosphates mainly.
Does anyone know if xylenes work?
Only m-xylene forms azeotrope with water and the b.p. of the azeotrope is noticeably higher (92 °C) compared to toluene/water (84.1 °C) - this will lead to more melting and decomposition.
Alternative solvents may be benzene (69.3 / 80.2 C), chloroform (56.1 / 61.2 C) and carbon tetrachloride (66.8 / 76.8).
DCM could be an interesting alternative but the b.p. of azeotrope is very low and contains very little water so the drying would take ages.
For something with "Crunch" in its name, Captain Crunch gets soggy very quickly.
Yaaay! My like made it 666!!! 😈🤣🤣🤣
nothing more annoying than surface tension problems hahahahaha