Wikipedia:Reference desk/Archives/Science/2020 October 1
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October 1 edit
Cleaning with soda edit
Cleaning power of vinegar is based on the chemical reaction which turns calcium carbonate deposits into calcium acetate which is soluble in water. Is washing soda cleaning power also based on chemical reaction? Washing soda forms calcium carbonate. Thank you. Hevesli (talk) 11:05, 1 October 2020 (UTC)
- Washing soda is a mild alkali (base), and so it works like many bases, by saponification of oils and fats to form soluble surfactants (i.e. soap). Washing soda can form calcium carbonate and magnesium carbonate if you have a hard water supply, but in the absence of those ions, will not do so. Additionally, if it is not fully dissolved, washing soda can act as a mild abrasive which can help clean as well. --Jayron32 11:25, 1 October 2020 (UTC)
- I was wondering if someone else would address this but since no one did..... I don't think it's correct to say the "Cleaning power of vinegar is based on the chemical reaction which turns calcium carbonate deposits into calcium acetate which is soluble in water". It's obviously one important process depending on what you're cleaning, but it's not the only one. More generally a more acidic cleaner like vinegar may help remove other inorganic or mineral deposits/scaling e.g. soap scum besides just calcium carbonate deposits, and may also better dissolve stuff you are trying to remove than simply plain water. An alkaline, another acidic cleaning product or something else including simply soap or detergent may be better choice for some things, but it seems to me if you're talking about the "cleaning power of vinegar" the logical comparison is simply water. I had difficulty finding sources which actually talk about this which weren't crap but see e.g. our article Vinegar#Household uses and [1], [2] and these non RS [3], [4]. Or for a very specific example [5] Nil Einne (talk) 16:53, 3 October 2020 (UTC)
Disinfecting power of limewater and milk of lime edit
What disinfecting ability have the limewater and the milk of lime în general and against viruses including the present virus?--109.166.128.144 (talk) 11:51, 1 October 2020 (UTC)
- This articles seem to be a good place for you to start your research: [6], [7]. The consensus seems to be that some viruses can be killed by limewater, but I can't find any information of its effect on SARS-CoV-2. --Jayron32 11:50, 2 October 2020 (UTC)
puberty blocking drugs for cisgender children edit
What is the general societal view on cisgender children who want blockers "just because" they don't want deep voices/beards and mustaches or fullness of breast and hip? PAustin4thApril1980 (talk) 12:20, 1 October 2020 (UTC)
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