Timeline for Commercial chalk for kids composition
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
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| Apr 30, 2020 at 14:13 | comment | added | borjagvo | Thanks a lot for all contributions!! I really appreciate. | |
| Apr 29, 2020 at 12:40 | history | removed from network questions | Martin - マーチン♦ | ||
| Apr 29, 2020 at 12:31 | comment | added | cbeleites | In addition, we have a chinese whispers-like joke of how such terms can turn into meaningless jumble of perfectly normal words for NaHCO3: Doppelsohlenkauendes Nashorn [double sole chewing rhinoceros] instead of doppelt kohlensaures Natron. It is a bit of a tautology, since German "Natron" is already NaHCO3, doppelt kohlensauer: 2 (double) equivialents of carbonic acid (compare bicarbonate) [per equivalent of sodium]. But Natron in this naming system can stand for Na⁺ in general (or if you want, NaOH). So the tautology helps against this ambiguity. | |
| Apr 29, 2020 at 12:30 | comment | added | cbeleites | @ChrisH: I suspect that there is a lot in what you say. In my native language, German, "Kohlensaurer Kalk" [literally translated "carbonic-acidic lime"] is an old-fashioned way of refering to CaCO3, similarly "Schwefelsaurer Kalk" [sulphuric-acidic lime] is CaSO4. | |
| Apr 28, 2020 at 12:02 | history | edited | Martin - マーチン♦ | CC BY-SA 4.0 |
deleted 15 characters in body
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| Apr 28, 2020 at 8:13 | comment | added | Chris H | There are probably at least 2 translation steps in the terminology, with the second being into English and the first from the chemical composition to everyday language. I can just about see how you could start from "mixed sulphate/carbonate" and get to "sulphuric acid, carbon" | |
| Apr 28, 2020 at 3:13 | history | became hot network question | |||
| Apr 27, 2020 at 23:23 | answer | added | ACR | timeline score: 23 | |
| Apr 27, 2020 at 19:55 | answer | added | Maurice | timeline score: 8 | |
| Apr 27, 2020 at 19:37 | comment | added | MaxW | I couldn't find any reference to Sulfuric acid carbon as some sort of industrial product. I'd guess that Sulfuric acid carbon is their name for some sort of calcium sulfate product which they buy and is a byproduct of some other process. | |
| Apr 27, 2020 at 19:34 | review | Close votes | |||
| May 4, 2020 at 3:08 | |||||
| Apr 27, 2020 at 19:31 | comment | added | MaxW | It seems that most "chalk" today is really based on gypsum, $\ce{CaSO4\cdot 2H2O}$, rather than the mineral chalk which is sedimentary carbonate rock, $\ce{CaCO3}$, derived from marine organisms. | |
| Apr 27, 2020 at 19:25 | review | Low quality posts | |||
| Apr 28, 2020 at 12:05 | |||||
| Apr 27, 2020 at 19:16 | review | First posts | |||
| Apr 27, 2020 at 19:48 | |||||
| Apr 27, 2020 at 19:07 | history | asked | borjagvo | CC BY-SA 4.0 |