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  1. When does "always add acid" not apply? [duplicate]

    Oct 16, 2023 · I've been taught a LONG time ago to AAA "Always Add Acid". I've recently come across what feels like an exception to that rule when making piranha solution (you add the …

  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 a C4 ring impossible? - Chemistry Stack Exchange

    Mar 20, 2023 · A four C ring does exist in many compounds, but it is not possible for double bonds. Cumulated double bonds $\ce {C=C=C}$ must be linear, in 1 line. They can be bent a little, but it …

  4. How do ions conduct electricity? - Chemistry Stack Exchange

    Jun 22, 2020 · I mean to ask what do ions actually do while conducting electricity? Do they simply take up the electrons and transport it? If it is so, I do not understand how anions can take up more …

  5. 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 …

  6. Why does the Co³⁺/Co²⁺ couple have such a high reduction potential?

    Mar 16, 2019 · @AbhigyanC no, that cannot explain anything. If anything, the large CFSE of Co (3+) should the reduction potential (as it stabilises the oxidised form). Anyway, as described in the main …

  7. Why does liquid water form when we exhale on a mirror?

    Mar 11, 2019 · In the descriptions below, I always assume external pressure to be constant at 1 atm, the condition where daily observations are made. 1) When I exhale on a mirror, liquid water forms on the …

  8. organic chemistry - Is it possible to reduce a carboxylic acid to an ...

    Mar 14, 2025 · When reducing a carboxylic acid, it normally gets reduced to an alcohol with the brief intermediate stage of an aldehyde quickly getting reduced. Is it possible to get an aldehyde from a …

  9. What is laboratory air? - Chemistry Stack Exchange

    Dec 1, 2023 · Oftentimes in the literature, particularly for oxidation studies, the authors mention that experiments were performed in "laboratory air." Is there any distinction from laboratory air …

  10. Why does Mg2+ have the ionic radii bigger than Ca2+

    Feb 16, 2015 · as shown in the above pic Mg2+has more smaller size then Ca2+... I'm sorry but your question is wrong, Why Ca2+ has bigger Ionic Radii then Mg2+? because No of Shells increases …