Magic Liquid Science Experiment at Home 🔮🌈🧪⚗️ 

Indeed this occurs a lot, but notice that most of the dyes remain in the alcohol layer, even at high pH

@@TommyTechnetium I use acetone for this demo, not isopropanol. Perhaps it explains some differences. An other example is bromophenol blue: so much water in the acetone phase you don't see a difference between the two layers.

@@brusicor02 That's very interesting. I love all the differences that can be achieved by varying salts, etc

Thank you 😊

Great idea! I've only tried a bromination reaction once and couldn't get it to work. Maybe when I get access to a lab again I can give this a shot

Thank you 😊

This wins a Tommy Technetium silver comment award 🥈. Universal indicator can be purchased online for a fairly inexpensive price. I have indeed tried other indicators and as noted in the video, food dye. I've also used various salts and different organic liquids. At high pH, phenolphthalein has a -2 charge, which explains why it dissolves in the salt water layer at higher pH. The different colors in the video at the end were all obtained by using the recipe outlined in the video, but different amounts of acid/base to get different pH values and therefore different colors

Here in Germany universal indicator solution is only offered by sellers which exclusively supply commercial and institutional customers - and it costs more than 80 Euros per litre then! 😧 And of course that's right: in its deprotonated form phenolphthalein is better soluble in water than in organic solvents - I just didn't think of that... ☺️ But one thing I really have to ask myself: Where are all your subscribers? Your videos, especially the long ones, deserve much more attention! 🤩💯

@@experimental_chemistry Thank you for your kind words. Looks like you'll be using anthyocyanin indicator extracted from plants for this experiment. They will likely decompose over time. Nevertheless, please do let me know if you try this experiment using anthocyanin extract. I'd love to hear how it works out

​​​​​​​@@TommyTechnetium No, just tried it with a selfmade extract from universal indicator paper which is still a little too dilute to give impressive results like yours, but the principle was already well recognizable and looked very nice - especially when I added caustic soda. Btw.: In the beginning when I added i-pOH to the brine first a lot of salt precipitated out, so I had to decant off. Yes, the dye in red gabbage is an anthocyanine. I have none at hand at the moment but I will try it out next time I cook it as a side dish to roast anyways - in christmas time I guess, because it's a typical winter vegetable. We cook it with bayleaf, cloves and vinegar - therefore it's finally already more blue than red gabbage... 👨‍🍳 In the end cooking is nothing but chemistry, and chemistry not much more than cooking. In both cases you have to follow a recipe to succeed, but in chemistry you shouldn't lick the spoon... 😉☠️

@@experimental_chemistry Nice!! What percent isopropyl did you use?

I make no claims on what type of water you should drink

So sorry... 😞

Indeed! I need to try this indicator with this system

It will work but the cabbage indicator will decay over time

Hey thanks for the response. My nephew LOVES your videos. He's 6! I love them too, keep them coming!

@@nonamegiven7594 Thank you for your kind words. I'm always so happy to hear when young kids enjoy the beauty and fascination of science

@@TommyTechnetium Here's a question from my nephew. What other vegetables or fruits could be used besides red cabbage?

@@nonamegiven7594 A surprising number of plants work. I'd encourage your nephew (with adult help) to test various plant-based foods with vinegar, baking soda, and ammonia. Start with blueberries, extracting the blueberry pigments into water

When alcohol and water mix, there is a loss of volume, the air bubbles represent this lost space

I bet this would make an awesome lamp (just the clear solutions) using ultrasound to cause mixing and RGB LED below to make it shimmer.

@@TommyTechnetium That's.. not how that works, not remotely, in fact that's just straight up wrong, a loss of volume due to mixing in no way explains the formation of a gas, if that's even what's taking place. I get the feeling you were trying to explain it assuming I'm like 10 or something, which I get it, I do that sometimes, but it's still just wrong My best guess is residual bubbles from the addition of the alcohol since it was quite splashy, otherwise I'd do a characterisation of the gas since if it's something new, it's likely hydrogen or oxygen, either or it definitely has nothing to do with the loss of volume since that can and does happen without the generation of gas.

@@andym.s.5231 I appreciate the pushback; I'm not close to sure what's going on. I highly doubt, however, that a chemical reaction is going on to generate new gases. Perhaps the mixture somehow allows dissolved gases to escape?

Murica bro

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