The yield of this synthesis is surprisingly high, after so many manipulations show's just how high yields can go when handled with care and separated with pure materials throughout the whole process... bravo.
This is a great video; although old it shows how real chemists work and has been veru useful to my Year 12 Chemistry Students for several decades. Lance B. Russell Senior Chemistry Teacher Queensland Australia
Este vídeo é um tesouro inestimável, mostra nos o grande cientista americano, Theodore Albert Geissman em sua rotina diária de pesquisa, ele foi um nome importantíssimo da Quimica Organica, deixou um legado incrível que poucas pessoas conhecem e que deve ser divulgado pra que todos possam conhecer esse cientista maravilhoso. Para mim foi uma grata surpresa encontrar esse vídeo e os demais do The Lawrence Hall of Science. Muito grato pela postagem!
At the end of the experiment they used IR spectrophotometer of old type. Today we live with digital technology which have relieved the efforts in precision and accuracy. It feels great when we look at the past and we compare the technology of that time with today's advancements.
You can use "Vogel's Textbook of Practical Organic Chemistry" (3rd edition). You can find this book in the Internet for download. Sorry my English if I wrong some word, it's not my native language. =)
There's lots of reasons why chemicals get spilt. I think wearing safety glasses has become standard in all laboratories several decades ago as many people lost their eye sight. The fumes may not kill instantly, but they will do some damage when inhaled. Sarcasm, partially. In reality all these features would be found in a modern properly set up chemistry laboratory.
my interests primarily lie with the infinite beyond of the ever expanding blackness, but i really enjoyed this, im very glad my chemist friend linked it to me ^^
i believe year 12 means grade 12 most likely 2nd last year of high school or last year, not too sure about that province of Australia.... but yea, it's high school so it should be standard curriculum
Nothing very dangerous? Well a tiny bit of sulphuric acid would still damage the eye-sight irreversibly. I think now we could also add "no fume hood", no hazard labels on chemicals no emergency exits, no fire extinguishers, no eye wash station, no emergency shower to the list. Most places I worked at have totally banned open flames, though I can't see the problem with it.
Why would the acid come into his eyes? He's not using pressurrized systems. Nothing done in this synthesis deals with toxic fumes, so fume hood is also irrelevant. The other stuff you mention is obviously sarcasm.
yeah I feel like so many oldschool techniques aren't taught anymore, I'd love to study under an oldschool badass chemist...too bad most of them are dying
I get it with the gloves and goggles (though nothing he does is very dangerous), but what open flame heating are you talking about? Determination of melting point? I don't see any problems with that. If one is the only person in the lab working with volatile flammables, and at the given moment one is not using any of them, opened flame is not an issue. It is not forbidden. The only reason why modern laboratory might be wimpy is because certain wimpy people make it look that way.
If you want to be a real grammar nazi, chemical compounds and adjectives aren't written with capital letters. It's dichromate and carcinogenic, not Dichromate and Carcinogenic. But you're right about its usage. It's used in labs all the time.
Here's a reality check. People don't wear goggles in labs unless they're doing something with greater chance of going wrong. One thing are safety videos, and reality is something else. For all I care, goggles limit the sight, so you might get hurt even if doing something benign. One of the stupidest people in the labs are the ones that encase themselves in safety armor every single time. My experience.. There are no noxious fumes in this video. If there are noxious fumes, a fume hood is needed.
The yield of this synthesis is surprisingly high, after so many manipulations
show's just how high yields can go when handled with care and separated with pure materials throughout the whole process... bravo.
This is a great video; although old it shows how real chemists work and has been veru useful to my Year 12 Chemistry Students for several decades.
Lance B. Russell
Senior Chemistry Teacher Queensland Australia
goin gloveless like a champ
Este vídeo é um tesouro inestimável, mostra nos o grande cientista americano, Theodore Albert Geissman em sua rotina diária de pesquisa, ele foi um nome importantíssimo da Quimica Organica, deixou um legado incrível que poucas pessoas conhecem e que deve ser divulgado pra que todos possam conhecer esse cientista maravilhoso. Para mim foi uma grata surpresa encontrar esse vídeo e os demais do The Lawrence Hall of Science. Muito grato pela postagem!
At the end of the experiment they used IR spectrophotometer of old type. Today we live with digital technology which have relieved the efforts in precision and accuracy. It feels great when we look at the past and we compare the technology of that time with today's advancements.
you show such videos to your 12yrs old chemistry students?
you are a legend..
Synthesis purification identification
I learned so much from this and I want to try it.
Amazing video! We learned a lot from this, greatly showed the things we desired for our last year of high school, thank you :D
Thank you, Professor,
What a cool way to determine melting point!)
You can use "Vogel's Textbook of Practical Organic Chemistry" (3rd edition). You can find this book in the Internet for download.
Sorry my English if I wrong some word, it's not my native language. =)
Awesome lecture and experiment 🙏🏾
Awesome!!! Thank You!!!
vintage chemistry
20:46 Glenn T. Seaborg, the guy who was on the team that discovered most of the transuranic elements.
If i remember correctly the element 106 is Seaborgium
For his contributions he got a Nobel prize too
There's lots of reasons why chemicals get spilt. I think wearing safety glasses has become standard in all laboratories several decades ago as many people lost their eye sight.
The fumes may not kill instantly, but they will do some damage when inhaled.
Sarcasm, partially. In reality all these features would be found in a modern properly set up chemistry laboratory.
my interests primarily lie with the infinite beyond of the ever expanding blackness, but i really enjoyed this, im very glad my chemist friend linked it to me ^^
i believe year 12 means grade 12
most likely 2nd last year of high school or last year,
not too sure about that province of Australia.... but yea, it's high school so it should be standard curriculum
He used electric heater when he distilled the ketone from ether. Also it's safe to assume the heating bath wasn't made from ether :P
link handbook Professor.
Does anyone know what the book is that is used for the melting point of the derivative?
Open flame heating is dangerous by itself...but whilst using ether as an organic solvent? Wow.
Nothing very dangerous? Well a tiny bit of sulphuric acid would still damage the eye-sight irreversibly.
I think now we could also add "no fume hood", no hazard labels on chemicals no emergency exits, no fire extinguishers, no eye wash station, no emergency shower to the list.
Most places I worked at have totally banned open flames, though I can't see the problem with it.
More of this!
What about protective eyewear n nitrile gloves,and a water bath?😢
Greatest thing ever! Im gonna enjoy ochem.
Acidic dichromate forms chromic acid... This will be the final oxidizer..
yeah science!
thank u sirji
I came here wanted to know how the synthetic compounds of perfume are created, im no scientist just love perfume
Why would the acid come into his eyes? He's not using pressurrized systems.
Nothing done in this synthesis deals with toxic fumes, so fume hood is also irrelevant. The other stuff you mention is obviously sarcasm.
I love it 🤓
I love oxidation of alcohols! just so simple yet so elegant
yeah I feel like so many oldschool techniques aren't taught anymore, I'd love to study under an oldschool badass chemist...too bad most of them are dying
seems damn interesting and cool. I just don't get a thing because I study psychology but I'll study some chemistry as a hobbie.
bicromate is not used anymore in labs because of his cancerogenic :)
it means 2-
sorry from Italy :P
I get it with the gloves and goggles (though nothing he does is very dangerous), but what open flame heating are you talking about? Determination of melting point? I don't see any problems with that. If one is the only person in the lab working with volatile flammables, and at the given moment one is not using any of them, opened flame is not an issue. It is not forbidden.
The only reason why modern laboratory might be wimpy is because certain wimpy people make it look that way.
Cr(VI) Without gloves? lal, lel, lil, LOL, lul.
He's no Walter White
Oh my God, it's nail cigarette
better way
im so high
If you want to be a real grammar nazi, chemical compounds and adjectives aren't written with capital letters. It's dichromate and carcinogenic, not Dichromate and Carcinogenic.
But you're right about its usage. It's used in labs all the time.
Holy-Terrorist:>*=* Cool!
Here's a reality check. People don't wear goggles in labs unless they're doing something with greater chance of going wrong. One thing are safety videos, and reality is something else. For all I care, goggles limit the sight, so you might get hurt even if doing something benign.
One of the stupidest people in the labs are the ones that encase themselves in safety armor every single time. My experience..
There are no noxious fumes in this video. If there are noxious fumes, a fume hood is needed.