2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Qhov kev tshawb pom ntawm sulfuric acid tau lees paub rau 8th caug xyoo alchemist Jabir ibn Hayyan.
Sulfuric acid ua ntej li cas?
Nyob rau xyoo pua 17th, German-Dutch chemist Johann Glauber tau npaj sulfuric acid los ntawm kev hlawv sulfur ua ke nrog ntsev (potassium nitrate, KNO 3), nyob rau hauv lub xub ntiag ntawm chav. Raws li cov ntsev decomposes, nws oxidizes leej faj rau SO 3, uas ua ke nrog dej los tsim sulfuric acid.
Thaum twg yog sulfuric acid tsim?
Ib puag ncig 1735, sulfuric acid yog thawj pawg tsim los ntawm tus kws muag tshuaj Askiv Joshua Ward hauv cov thawv iav. Tom qab ntawd, kwv yees li 15 xyoos tom qab ntawd, tus kws tsim khoom Askiv Askiv John Roebuck (1718-1794) tau siv cov txheej txheem ua cov hlau lead uas ua rau nws cov khoom tsim tau zoo dua thiab tsis muaj nqi.
Sulfuric acid nyob qhov twg?
Sulfuric acid muaj nyob hauv roj teeb acid thiab hauv ntiaj teb cov kua qaub nag.
leej twg yog leej txiv ntawm sulfuric acid?
Nyob rau xyoo 1746 hauv Birmingham, John Roebuck pib tsim cov sulfuric acid …
Pom zoo:
Leej twg yog sulfuric acid?
Sulfuric acid (American spelling) los yog sulfuric acid (Commonwe alth spelling), tseem hu ua roj ntawm vitriol, yog cov ntxhia acid uas muaj cov ntsiab lus sulfur, oxygen thiab hydrogen, nrog cov mis molecular H 2 SO 4 Nws yog ib qho tsis muaj xim, tsis muaj ntxhiab tsw thiab kua nplaum uas yog miscible nrog dej.
Thaum twg ntxiv sulfuric acid rau roj teeb?
Thaum koj pom koj roj teeb acid theem pib poob, koj yuav xav tias thaum twg thiab yog tias tsim nyog ntxiv kua qaub, lossis tsuas yog dej xwb. Peb pom zoo tias tshwj tsis yog lub roj teeb tau ntsoog thiab tag nrho cov kua qaub ntws tawm, uas koj ntxiv cov dej distilled nkaus xwb.
Leej twg tau spayed thiab leej twg tau txais neutered?
Kev npam tus dev hais txog kev tshem tus poj niam dev lub cev xeeb tub, hos neutering yog hais txog cov txheej txheem uas ua rau txiv neej. Thaum tus poj niam tus dev tau spayed, tus kws kho tsiaj tshem nws zes qe menyuam thiab feem ntau nws lub tsev menyuam thiab.
Puas nrhiav tau lossis nrhiav tau?
Yog li, koj yuav tsum tau siv "could find". Lub modal verb, tau yog twb nyob rau hauv nws paste-form: ua. Yog li koj tsis tas yuav hloov pauv los nrhiav. Yuav nrhiav tau lossis nrhiav tau? "Ntaus" yog sib npaug. "
Leej twg nrhiav tau arachidic acid?
Qhov no polyunsaturated fatty acid ua haujlwm tseem ceeb hauv biochemical lub luag haujlwm, suav nrog ua tus thawj coj ncaj qha ntawm bioactive lipid mediators xws li prostaglandin thiab leukotrienes. Qhov no 20 carbon fatty acid nrog plaub ob daim ntawv cog lus yog thawj zaug cais thiab txheeb xyuas los ntawm cov ntaub so ntswg mammalian xyoo 1909 los ntawm Percival Hartley.
