Open transcript >> toggle timestamp >> copy & paste to Word >> ctrl + F keywords >> done with ochem worksheet
@sairamaritzacarhuayalalvar7645
3 жыл бұрын
This is very useful in pandemic times, because we aren't allowed to go to the laboratories! thank you :D
@vedmaburuxova68
Жыл бұрын
I had 2 lab courses simultaneously during 2 semesters of covid. We just had to put on a mask and get to it. Was horrible, couldn't see anything with the protective glasses fogging up haha
@micahkkipruto5336
4 жыл бұрын
Learning ,it’s very educative and resourceful. As Virginia Union University student I recommend this for you too
@filmviewer7
8 жыл бұрын
Anyone else here because of ochem class? XD
@x0xxx007i
8 жыл бұрын
me lol
@twixxtwizz452
4 жыл бұрын
Yes, and corona lol
@mikkit876
4 жыл бұрын
yup, even 3 years later lol
@skiphoffenflaven8004
4 жыл бұрын
I would assume that to be the case, in general.
@97amani
4 жыл бұрын
anyone doing organic chem assignments for pearson mastering chemistry? email me at allen.amani97@gmail.com (incentive provided)
@Fraidoon
4 жыл бұрын
Thanos: Post the video his man: But sire! the quality Thanos: I said do it
@chemistmcg
9 жыл бұрын
don't forget to remove those boiling chips you added before allowing it to cool.
@prof.luizclaudio.barbosa
4 жыл бұрын
Excelent video on recrystallization.
@lssam100
13 жыл бұрын
Thank you Mit , THANKS .
@playingguitarorange
13 жыл бұрын
THUMBS UP---IF you enjoyed the music accompanying the recrystallization.
@eliseeng1709
5 жыл бұрын
yesss
@ethandriessen5565
17 күн бұрын
Oke this explains things very well and is very educative but for the love of all that's holy, please stop blasting that alarm audio, my poor ears.. It would also be appreciated if a reupload of this video with higher video resolution were released.
@user-tv6ii8zl6v
3 жыл бұрын
Question : in the case of two solvent, what is the problem if I do first hot filteration for more purification if there are insoluble impurities suspended with my new copmound?
@chunkymonkey2782
11 жыл бұрын
can someone explain more in depth why oiling out happens and what to do if it happens?
@Skunkhunt_42
6 жыл бұрын
Possible with any method, especially reverse additions. One possible cause of oiling out is that drops of the product solution are surrounded by the antisolvent, in which the solubility is very low, and this low solubility creates localized regions with very high supersaturation ratios. Many variables to consider here. Before mixing to the molecular level is achieved, the localized high supersaturation forces the product out of solution without allowing sufficient time for ordering of molecules to enable crystal development. The resulting oily particles have a tendency to clump together before the Occluded solvent migrates throughout the solution. As the mixture is aged, the oiled-out particles may transform into amorphous solids or become "crystalline" (with poor lattice structure)
@QueenofCool
10 жыл бұрын
Why is it that the ideal solvent is insoluble in room temperature but soluble with the sample at boiling point?
@AgonyGlyph
9 жыл бұрын
You want all of the compound to dissolve in the solvent (= no crystals) at the point where the solvent would start to boil. But when you cool down the solvent the solubility decreases which leads to forming of compound crystals. When solution has cooled to room temperature you want all of your initial compound to be as crystals, and not dissolved in the solvent, for a maximum yield. Only the impurities should be dissolved in the solvent at room temperature.
@AmlanRayasingh
3 жыл бұрын
Henry law and roult law
@2MinTz2
10 жыл бұрын
chunkymonkey2782 If I understand correctly, oiling happens when the boiling point of the solvent exceed the melting point of the sample. So when sample is dissolve at boiling point of the solvent, the solution created would have the sample "oiled" out instead of crystallize out. If this happen, you should reselect your solvent...
@ikeotoyeuzorma5222
2 жыл бұрын
Good luck
@RuthNaguaJ
8 жыл бұрын
como lo cambio al español?? ayuda porfavor
@TheDoctorRulesPSN
11 жыл бұрын
Great audio
@pedronuno8892
6 жыл бұрын
do you know whose composer is the music at 10:57 from?
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