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  1. Why is a C4 ring impossible? - Chemistry Stack Exchange

    Mar 20, 2023 · Ring strain and principles of aromaticity render such a molecule unstable. Each double bond contributes 2 π electrons, and with four double bonds in one cycle in common, there is a total …

  2. Why does my sea salt have a best by date? [duplicate]

    Apr 3, 2022 · @Farooq: As the link in this answer shows, culinary “sea salt” certainly can contain anti-caking agents. And as the answer explains, the (potential very slight) deterioration that justifies the …

  3. Why is OH- so electrically conductive? - Chemistry Stack Exchange

    Jan 10, 2025 · In high school (or mine, at least), we're taught that H+ ions are very conductive, due to their small molar mass, and by Newton's 2nd Law, higher acceleration, making them more mobile in …

  4. organic chemistry - Why is naphthalene's protonated pKa −20 ...

    Sep 22, 2025 · A low $\\mathrm{p}K_\\mathrm{a}$ would indicate a strong acid. However, naphthalene is an extremely weak acid, and I read online that it can be classified as a weak base. Can someone …

  5. How can one explain niobium’s weird electronic configuration?

    Mar 31, 2018 · As cited in an answer to this question, the ground state electronic configuration of niobium is: $\\ce{Nb: [Kr] 5s^1 4d^4}$ Why is that so? What factors stabilize this configuration, …

  6. biochemistry - Stability of different tautomers of vitamin C ...

    Mar 17, 2023 · Above all four tautomers represent Vitamin C (Ascorbic acid) So here are some basic rules that I learnt. 1.Usually keto form is more stable due to bond enthalpy considerations 2.Enol …

  7. How can methane be an alkane? - Chemistry Stack Exchange

    Dec 25, 2024 · Alkanes are compounds which have single bond between C atoms. If so,how can methane be a alkane if it only has one C atom which makes it impossible for 2 C atoms to exist and …

  8. Is buckminsterfullerene aromatic? - Chemistry Stack Exchange

    Sep 21, 2015 · According to Wikipedia, The $\\ce{C60}$ molecule is extremely stable,[26] withstanding high temperatures and high pressures. The exposed surface of the structure can selectively react …

  9. organic chemistry - What is a suitable process to eliminate an excess ...

    Apr 7, 2023 · I have a reaction in which pyridin is used as a reagent in excess. The resulting product is water soluble and an anion. Pyridinium there will act as a counter ion. Normally, when the product is …

  10. redox - Half equations for H2O2 for its reducing and oxidising nature ...

    May 1, 2014 · Is there a complete list of all the half equations for $\\ce{H2O2}$ - both oxidation and reduction, in acidic and alkaline conditions? I've looked on the internet but can't seem to find a list …