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Heavy water tastes sweet!

Discussion in 'Science and Technology' started by Subduction Zone, Apr 7, 2021 at 2:21 AM.

  1. Subduction Zone

    Subduction Zone Veteran Member

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  2. exchemist

    exchemist Veteran Member

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    From looking at the article it seems this is attributed to the proteins in the human taste receptor being slightly more rigid and compact in D2O than in H2O.

    It is all traced back to the effect by which hydrogen bonding in D2O is a bit stronger than in H2O, which in turn is due to the lower zero point energy of the H-bond, as a result of its lower vibrational frequency, because of the greater mass of the D atom.

    So there we are: a zero point energy effect! That should bring the forum woomeisters out of the woodwork.:D
     
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  3. Valjean

    Valjean Veteran Member
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    I wonder what tritium oxide (3H) would taste like?
     
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  4. exchemist

    exchemist Veteran Member

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    I presume the H-bonding effect will be even greater, but whether the human taste receptor would signal that as a sweeter taste I don't know.
     
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  5. Aupmanyav

    Aupmanyav Be your own guru

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    Ah! Why did not Allah / God made all water as D20 or D30? Moreover, we would have been spared of the effort to manufacture it. I think India is low on production of Heavy Water.
     
    #5 Aupmanyav, Apr 7, 2021 at 6:21 AM
    Last edited: Apr 7, 2021 at 8:29 AM
  6. exchemist

    exchemist Veteran Member

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    D3O would taste sour, though: it would be really D3O+ ;). (The formation of H3O+ is what makes acids acid: Hydronium - Wikipedia )

    Perhaps you mean T2O? But don't drink that. It is radioactive and very bad for you: Tritiated water - Wikipedia
     
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  7. Aupmanyav

    Aupmanyav Be your own guru

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    Arrhenius Acid. Thanks, You saved me. :)
     
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  8. Subduction Zone

    Subduction Zone Veteran Member

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    Yes, you are not tasting quantum effects as much with the heavy water. Mason had fun with that in his video since he often refutes peddlers of quantum mechanics woo woo.
     
  9. exchemist

    exchemist Veteran Member

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    That's an amusing way of looking at it, certainly.
     
  10. Subduction Zone

    Subduction Zone Veteran Member

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    The video is a good one of his. He goes over how the question arose, how they tested it at his lab and how he pinned down that the "sweetness" was roughly that of a one percent sugar solution. At one point they realized that this was a topic that should be treated more seriously. He found experts in the field that were willing to test and he gives them the majority of the credit for the paper. He said his only contribution to the actual paper was that he did the highly technical distillation of water required for it. He would have to blow the glass for the distillation for each vile that he would distill. That part of the project alone took a month of his time.

    The reason that they distilled the already highly purified samples was that they knew the first criticism wielded against them would be that the water was "dirty". I posted the YouTube video first since that is what led to his experimentation. I then linked the technical paper since that is the best evidence for the phenomenon and lastly the popular paper.
     
  11. Subduction Zone

    Subduction Zone Veteran Member

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    A two percent sugar solution? Ooh, and slightly effervescent:D
     
  12. Valjean

    Valjean Veteran Member
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    He likes to keep things simple.
     
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