I'm currently self studying, i couldn't learn by just reading and listening to stuff so i really appreciate you put demonstrations in :) It's a rare thing on youtube
This was a really great introduction to distillations! I've seen several different chemists explain "distillations 101" & this was the only time where care was taken to show the finer points of setting up the apparatus, the types of glassware to be used (and their functions) & the differences between the two types of distillation.
i am confused. you used a mixture of acetone and cyclohexane. In the end, the bulb was empty. So did you get the same mix-out that you put in? Because half of it should have been left in the bulb - the cyclohexane part.
The graph of your ideal destillation, temp vs. volume at 9:14 might be wrong. The way you are drawing it, you are getting destillate before 56°C. It becomes more obvious if you swap the x and y axis.
I think the ideal graph should actualy start from 56 deg. Or go from origin straight up to 56 deg and then as depicted, so there should be two sharp steps
Yes, it is wrong. The lines should begin at the 56 ˚C mark as they move to the right, not at the bottom of the graph as I drew it. That's an embarrassing mistake, and I'm happy that you noticed it.
Why is there temperature recordings every 2 degrees increments when a distillation procedure is separating 2 compounds in a mixture with 2 boiling points? You'd expect one temperature on the thermometer to be reached and maintained while it boils and condenses over and then the second compound in the mixture. Why recordings take place every 2 degrees increase?
Thank you. To purify those compounds, I encourage you to find literature on the topic and seek hands-on help from an expert. It can be very dangerous if you do it incorrectly.
Hello Dr. Derik, i just want to ask you about concentrating a 41% nitric acid solution by adding mangnesium nitrate (dehydrating agent) using a simple distillation : first we maintain temperature at 100°C (temp of water ebullition), collecting the half fraction which contains mainly water and raise temperature and collect a concentrated solution. Can we do that? Thanks in advance.
