Published By
Created On
10 Jun 2020 12:20:29 UTC
Transaction ID
Cost
Safe for Work
Free
Yes
Make Ethyl Propionate by Fischer Esterification
Glassware generously provided by http://www.alchemylabsupply.com/
Use the discount code "copper" for a 5% discount.
Donate to NurdRage!
Through Patreon (preferred): https://www.patreon.com/NurdRage
Through Bitcoin: 1NurdRAge7PNR4ULrbrpcYvc9RC4LDp9pS
In this video we synthesis ethyl propionate by fischer esterification of ethanol with propionic acid.
This video sponsored by:
...
https://www.youtube.com/watch?v=iwcQO9pxAGE
Use the discount code "copper" for a 5% discount.
Donate to NurdRage!
Through Patreon (preferred): https://www.patreon.com/NurdRage
Through Bitcoin: 1NurdRAge7PNR4ULrbrpcYvc9RC4LDp9pS
In this video we synthesis ethyl propionate by fischer esterification of ethanol with propionic acid.
This video sponsored by:
...
https://www.youtube.com/watch?v=iwcQO9pxAGE
Author
Content Type
Unspecified
video/mp4
Language
Unspecified
More from the publisher
Controlling
VIDEO
HOW T
how-to-levitate-pencil-lead
In this video we show you how to levitate pencil lead.
In a previous video we showed that pyrolytic graphite was diamagnetic, it was repelled by magnetic field, and that this repulsion was strong enough to levitate it.
You can see the previous video here: https://www.youtube.com/watch?v=jyqOTJOJSoU
Now pyrolytic graphite is expensive so a cheaper alternative is to use very thin pencil lead. Not all pencil lead works so you need to first test it by placing it on a table and approaching it from the side with a magnet. If the lead moves away, then it's diamagnetic, if it moves toward then it's paramagnetic and can't be used.
The pencil lead must also be thin, a very thick pencil lead will be too heavy for the effect to work.
...
https://www.youtube.com/watch?v=yeIizmhzPQc
Transaction
Created
1 month ago
Content Type
Language
video/mp4
Controlling
VIDEO
MAKE
make-fire-with-potassium-permanganate
In this video we use Potassium Permanganate to start fires.
Potassium Permanganate will directly react with various fuels like glycerol, PEG-based brake fluid, and antifreeze, to start fires. All you have to do is mix them.
For less reactive fuels like gasoline and mineral oil. It can be mixed and then a few drops of sulfuric acid added to create manganese heptoxide which is a powerful oxidant and will itself ignite most fuels.
Related videos:
The science of flaming brake fluid and pool chlorine: https://www.youtube.com/watch?v=SSNPtuAcTm0
I obtained my Potassium Permanganate here: https://amzn.to/2XAWxdB
...
https://www.youtube.com/watch?v=2S5HcClXRKs
Transaction
Created
1 month ago
Content Type
Language
video/mp4
Controlling
VIDEO
TEMPE
temperature-of-hot-ice-sodium-acetate
What is the Temperature of "Hot Ice" Sodium Acetate?
We answer this question by measuring it with a digital thermocouple. The result is that Hot Ice actually gets warmer as it freezes.
This is because the freezing process in sodium acetate is exothermic, it generates heat. So it gets warmer when you initiate the freezing. And keeps generating heat until it's completely solid.
This property is exploited in reusable heat packs.
Transaction
Created
1 month ago
Content Type
Language
video/mp4
English
Controlling
VIDEO
"ANTI
anti-magnetic-water-and-levitating
Diamagnetism is the property of a substance to be repelled by a magnetic field. Interestingly enough, water shows this effect. We build a simple, but very sensitive detector to show this. We also show pyrolytic carbon that is so diamagnetic that it can float above magnets if they are arranged the right way.
Water is diamagnetic, meaning it's slightly repelled by a magnetic field. But in everyday life this is almost impossible to notice. We need to build a very sensitive detector to see it.
Just get a basin of water and float a styrofoam block in it. Styrofoam is very light and so even the small repulsive force of a test tube of water will have a noticeable push on it. Push the test tube of water into the center of the block and simply hold a strong neodymium magnet as close as possible to the tube without touching it. It's a very small force, but eventually the block will start moving away from the magnet.
Pyrolytic graphite, also called pyrolytic carbon, exhibits the same effect and can even be made to levitate on top of a magnet. A single magnet is unstable since the graphite will like to fall off the side. But having four magnets and arranging them like in the video will create a "void" in the center that the graphite "falls" into and remains stably levitated.
...
https://www.youtube.com/watch?v=jyqOTJOJSoU
Transaction
Created
1 month ago
Content Type
Language
video/mp4
Controlling
VIDEO
MAKE
make-potassium-rhodizonate-for-lead
In this video we're going to make potassium rhodizonate, a chemical for testing the presence of lead.
Warning: This synthesis produces toxic nitrogen dioxide gases and handles corrosive acids. This should be performed in a fume hood with gloves.
First get 10 grams of inositol and add 25 mL of concentrated nitric acid. With a condenser, reflux the mixture for three hours. Eventually gas production will cease and the mixture should be allowed to cool. Add enough cold water to make the total volume 100 mL. Add an additional 50 mL of glacial (100%) acetic acid. Place the mixture on an ice bath and stir.
With continuous stirring, add in 40 g of potassium hydroxide in small portions. Be careful as it will produce a lot of heat and may bubble over. Allow time between each addition to allow the mixture to cool and settle down before adding the next portion.
Once all of the potassium hydroxide is added and the mixture is cool. Take it off the ice bath and continue stirring it overnight.
...
https://www.youtube.com/watch?v=BLmycZ2nrt0
Transaction
Created
1 month ago
Content Type
Language
video/mp4
Controlling
VIDEO
HOW F
how-fluorescence-works-the-science
In this video we explore the colorful science of fluorescence.
A really cool way to play with fluorescence at home is get a blue or violet laser pointer and shine it into a dish or jar of water where you have added a drop of fluorescent highlighter fluid. You'll clearly see the beam as the solution fluoresces in its path.
Now the common definition of fluorescent is something that glows a visible color when exposed to ultraviolet light. Fluorescence is actually much broader than that and you don't need ultraviolet light in particular. For example in the yellow fluorescent dye "rubrene" both violet and green lasers will activate it and glow yellow. This proves you don't always need ultraviolet light. But a red laser will not activate a yellow dye. Why is that?
What's happening in fluorescence is that the incoming light raises the energy of the electrons in the molecule to an excited state. The electrons then lose a bit of energy due to vibrations of the molecules. And finally the electrons return to the ground state by releasing light. Now since energy cannot be created or destroyed and a bit of energy was already lost as heat in the vibrations of the molecules, the energy of light emitted must have lower energy than the light absorbed.
So since the yellow fluorescent dye emits yellow light, we need to use light of higher energy like violet and green for it to glow. Red is lower energy than yellow light so it can't excite the dye.
...
https://www.youtube.com/watch?v=CcssdJf0pKQ
Transaction
Created
1 month ago
Content Type
Language
video/mp4
Controlling
VIDEO
VLOG:
vlog-high-school-students-beat-ph-d
Quick Vlog because I keep getting messages about this.
...
https://www.youtube.com/watch?v=Rd7hXFnSHZc
Transaction
Created
1 month ago
Content Type
Language
video/mp4
Controlling
VIDEO
SMASH
smash-glow-crystals-in-a-blender
We put triboluminescent, or "Smash Glow" Crystals in a blender.
Triboluminescence is the effect of light being emitted when something is broken, smashed, or otherwise broken. The substance in this video is a particular type of chemical called triphenylphosphinebis(pyridine)thiocyanato copper(I)
This was made on large scale from our previous video on smash glow crystals here: https://www.youtube.com/watch?v=hPtCvReouCM
Glassware generously provided by http://www.alchemylabsupply.com/
Use the discount code "nurdrage" for a 5% discount.
Donate to NurdRage!
...
https://www.youtube.com/watch?v=UU9CxAgSykk
Transaction
Created
1 month ago
Content Type
Language
video/mp4
Controlling
VIDEO
MAKE
make-potassium-permanganate
In this video, we explore the process of making potassium permanganate, a valuable oxidant with a striking purple color. Starting with 43g of manganese dioxide, often obtained from greensand filter media, and 25g of potassium chlorate, the chemicals are thoroughly mixed. A can made of iron is chosen as the reaction vessel due to its resistance to the highly corrosive mixture.
All reagents are mixed long with 40mL of water and 60g of potassium hydroxide. The can is placed in a furnace and heated to 400 degrees Celsius for several hours. This step involves the oxidation of manganese dioxide to potassium manganate by potassium chlorate, with potassium hydroxide providing essential potassium ions and alkaline conditions.
Once cooled and soaked in water, the solid chunks of potassium manganate are retrieved. To convert potassium manganate into potassium permanganate, chlorine gas is used. A chlorine generator comprising 45g of trichloroisocyanuric acid in 100mL water and 75mL of 30% hydrochloric acid is employed to produce chlorine gas, which is then introduced into the potassium manganate flask. The reaction results in potassium permanganate with potassium chloride as a byproduct.
Once the reaction is complete, the mixture is vacuum-filtered and then chilled to separate potassium permanganate from potassium chloride and hypochlorite. The potassium permanganate crystals are beautiful black needles.
The final yield is approximately 30.7g or 39%, adjusted to 52% considering the purity of the manganese dioxide used. Both crystallizations of potassium permanganate are found to be 99% pure with a 1% margin of error, confirmed through titration.
Donate to NurdRage!
Through Patreon (preferred): https://www.patreon.com/NurdRage
Through Youtube Memberships: https://www.youtube.com/channel/UCIgKGGJkt1MrNmhq3vRibYA/join
Twitter: https://twitter.com/NurdRage
Reddit: https://www.reddit.com/r/NurdRage/
Instagram: https://www.instagram.com/nurdrageyoutube/
...
https://www.youtube.com/watch?v=62jzXwn3-G4
Transaction
Created
1 month ago
Content Type
Language
video/mp4
English