Another great video from the Periodic Table of Videos.
So, what is your favorite chemical reaction?
I definitely prefer the precipitation of lead (II) iodide
I did this reaction in 11th grade general chemistry class. It was a lot of fun.
One of my top five chemical reactions is the thermite reaction.Sometimes it is difficult to demonstrate it due to lack of space or safety concern. Here is a neat way to show the redox reaction in action:
I can't say that the video you showed of the instant thermite is my favorite but I did perform the traditional flower pot into a bucket of sand slow cooking thermite reaction for our annual physics and chemistry demonstration and I have to say it was the most exciting reaction I have done!
I have 2:
The Blue Bottle reaction - demonstrates a lot of principals at once, easy to follow, color changes always attract attention
30% Peroxide in large plastic soft drink bottle + KI -> "Elephant Toothpaste" without the detergent. Neat to see the bottle shrink from the heat.
Watching the videos was frustrating so I only watched the 1st; too many interputions (plus the ad was annoying).
I love color, in art, chemistry, whatever so I guess the various clock reactions, especially the Orange and the Black Princeton Clock Reaction would rank quite high on my list of favorite reactions. However, I've never run one so my favorite reaction that I have run--many times--would be the Diels-Alder Reaction. The first was in Advanced Organic Lab as an undergraduate at the Univ. of Minnesota in 1960. This was followed by several preparations of 3-vinylindoles and subsequent Diels-Alder reactions with Prof. W. E. Noland at U of M. As a grad student with Prof. E. C. Taylor at Princeton, one of my projects involved DA reactions of aminodienes and dienediamines. Something about the deceptive apparent simplicity of the reaction, ordinarily not requiring catalysis, just mixing the reagents and watch it "zip up". Fascinating, even after sadly leaving the lab 40 years ago (but still a chemist--for life). Sorry--no videos.
My favorite is "Dichromate Volcano":
N2 + 4H2O + Cr2O3
It is very easy to set up for demonstration and students like when "something is burning". This is a great experiment to discuss the signs of a chemical reaction, introduce the concepts of decomposition, enthalpy and oxidation-reduction.
The screaming gummy bear (Haribo or generic gummy bear in molten potassium chlorate). I remember being very intrigued by the original discovery in J Chem Ed, and now there is a video!
Wow, that's great. And yes, the 80's do Rock!
Aldol condensation is my favourite reaction
.My favorite chemical reaction is very simple/complicated - the photosynthetic splitting of water with the reduction of carbon dioxide.
My favourites are two simple reactions: The trans-esterification and the esterification reactions. Both preferrably with fatty acids involved.
Biological oils and fats usually consist from triglycerides of fatty acids and glycerol with some amounts of free fatty acids (0,1 - 100%) depending on the general quality of the oil. During the trans-esterification reaction is the glycerin replaced by another alcohol, usually MeOH or EtOH by the aid of a catalyst, usually NaOMe or KOMe. This reaction turns the oil or fat from a viscous hard-combusted liqud into a fluid easily combusted thin oil. The properties of this oil are of course depending upon the lenght and unsaturation degree of the fatty acids involved, but it is nevertheless a remarkeble change taking place. The same goes for the esterification reaction, with the exceptions that there is water formed during the reaction and that there is another catalyst empoyed, usually H2SO4.
These reactions open up new political and technical perspectives, I guess that everybody is aware of how much people all over the globe that are using this reaction in order to produce heating oil and engine fuel for themselves and their customers on a small-scale basis. Not always good quality, but it still indicates that energy can be produced and consumed locally with very low carbon footprints ,also a less vunerable system than that of today. And all this thanks to these simple reactions.
Hydrogen 4.1 Helium in Disguise
My Favorite chemical reaction, when hydrocarbon components reaction with iron oxide catalyst, and the formation of iron carbide, and then separated the carbon in the form carbon nanofibers or carbon nanotubes.
My favorite reaction is the catalytic air oxidation of heavy hydrocarbon stocks such as oils, waxes, and bitumen under mild conditions. The process may convert such stocks into fractions suitable as fuels and as intermediates. Redox couples such as Co(III)/Co(II), Mn(III)/Mn(II), or Fe(III)/(II) may be used as catalysts for this purpose.
Oscillating reactions are indeed fascinating, this one in particular. They're even observed in industrial processes. The Briggs-Rauscher Reaction is not listed in "Name Reactions, 3rd ed." (Jie Jack Li, Springer, 2006). It, along with other named oscillating reactions, should be listed in future compendia. Also, is there a descriptive compendium of oscillating reactions?
Here's an interesting article published in the Journal of Organic Process Research and Development:
Retrieving data ...