Comment on ice treat

SpruceBringsteen@lemmy.world ⁨1⁩ ⁨day⁩ ago

• Karyoplasma@discuss.tchncs.de ⁨1⁩ ⁨day⁩ ago

  tl;dr Around -23°C (-9°F).

  Formula for freezing point depression is:

  ΔT~f~ = i * K~f~ * m
  

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  • salvaria@lemmy.blahaj.zone ⁨1⁩ ⁨day⁩ ago

    The bottle is green, the liquid is brown

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    • Karyoplasma@discuss.tchncs.de ⁨1⁩ ⁨day⁩ ago

      Yeah, that’s how it is here as well, so these Jägersicles look fake.

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      • errer@lemmy.world ⁨1⁩ ⁨day⁩ ago

        Food coloring

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    • idunnololz@lemmy.world ⁨1⁩ ⁨day⁩ ago

      No, at -15 it turns green /s

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  • Hacksaw@lemmy.ca ⁨20⁩ ⁨hours⁩ ago

    I did not know about that formula, very cool. It seems linear (unless the molality is a non-linear term), whereas the empirical data gets pretty whacky at higher concentrations. Maybe its validity is for low concentrations? I’m getting closer to -27C from this plot

    Plot of freezing point of water vs alcohol concentration

    Source www.researchgate.net/figure/Melting-freezing-points-of-alcohol-aqueous-solutions-vs-solvent-concentration-Weast_fig6_273304489

    Either way that’s getting close to “don’t lick it” temperatures lol!

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    • Karyoplasma@discuss.tchncs.de ⁨19⁩ ⁨hours⁩ ago

      The figure you’ve linked plots concentration by weight (wt.%), while the alcohol content of drinks is usually given in volume percent (v/v). Ethanol is less dense than water, so a 30% concentration by weight is a higher concentration by volume.

      Imagine a 100g solution of 30wt.% alcohol. That means that 30g are ethanol and 70% are water. the 70g of water translate to 70ml volume (density 1g/ml) and the 30g of ethanol translate to 30/0.789 = 38.02ml. So in total, you would have 108.02ml of liquid and the concentration of ethanol by volume would be 38.02/108.02 = 35.2%.

      Why it gets wacky at the end: Ethanol freezes at -114°C, water freezes at 0°C, but at specific concentrations, the eutectic composition, the solution freezes at a lower point than either of its constituents. The eutectic point is the lowest possible freezing point of a solution. The formula I gave is not applicable to eutectic solutions and is an approximation based on perfect solutions (which in reality don’t really exist).

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      • Ashiette@lemmy.world ⁨17⁩ ⁨hours⁩ ago

        There is only one error in your equations (and that doesn’t change much about your point) is that the volume of that mixture is slightly lower.

        Volume reduction in water - ethanol mixtures

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      • Hacksaw@lemmy.ca ⁨18⁩ ⁨hours⁩ ago

        Amazing, thanks for the clarification!

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  • Tar_alcaran@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

    All the other stuff in the drink might lower it a bit though, especially the 14% (!!!) sugar.

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    • Karyoplasma@discuss.tchncs.de ⁨1⁩ ⁨day⁩ ago

      You’re right, I edited it.

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  • Lemmyoutofhere@lemmy.ca ⁨1⁩ ⁨day⁩ ago

    “it has an alcohol by volume of 35% (61 degrees proof, or US 70 proof)”

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    • Karyoplasma@discuss.tchncs.de ⁨1⁩ ⁨day⁩ ago

      Whoops. Well I forgot to account for sugar and other stuff which decrease freezing temperature as well, so the result might still be around right. It’s an ok ballpark at least. Precisely calculating a solutions freezing temperature when it has that many different solubles is pretty hard.

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  • Tar_alcaran@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

    Is Jägermeister really that green in the US?

    It’s brown everywhere else.

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    • ignotum@lemmy.world ⁨1⁩ ⁨day⁩ ago

      Wouldn’t surprise me, they do love their food dyes over there

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• Venus_Ziegenfalle@feddit.org ⁨1⁩ ⁨day⁩ ago

  At least this 🤏 cold. I’m pretty sure it’s mixed since pure Jägermeister isn’t green.

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• altphoto@lemmy.today ⁨1⁩ ⁨day⁩ ago

  All those who have tried it this morning are currently busy trying to take the pop out.

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• W_itjust_works@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

  How much/what’s best to mix with to get a better freezing point? Always looking for new recipes.

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  • thisbenzingring@lemmy.sdf.org ⁨1⁩ ⁨day⁩ ago

    there’s a bar in Edinburgh Scotland called Panda and Sons, they bring the spirits to that spot where they can remove the water ice and then add other stuff or mix it up. They have their menu only that gives some details.

    My wife and I sampled most of the drinks. Interesting approach but you need some skill and the right equipment to make more than a mess

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    • Akasazh@feddit.nl ⁨1⁩ ⁨day⁩ ago

      Thnx, very interesting.

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