2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Friedrich Kohlrausch txuas ntxiv txhim kho conductometry nyob rau xyoo 1860 thaum nws siv alternating tam sim no rau dej, acids, thiab lwm yam kev daws teeb meem. Nws kuj tseem nyob ib puag ncig lub sijhawm no thaum Willis Whitney, uas tau kawm txog kev sib cuam tshuam ntawm sulfuric acid thiab chromium sulfate complexes, pom thawj qhov kawg ntawm conductometric.
Leej twg nrhiav tau titration?
Nyob rau hauv lub 18th xyoo pua, Francois Antoine Henri Descroizilles1tsim thawj buret. Cov txheej txheem tau tsim ntxiv los ntawm Karl Friedrich Mohr, uas, xyoo 1855, tau sau thawj phau ntawv hais txog titration, hu ua "Kev Qhia Phau Ntawv ntawm Titration Methods hauv Kev Tshawb Fawb Chemistry."
Lub hauv paus ntsiab lus tom qab conductometric titration yog dab tsi?
Lub hauv paus ntsiab lus ntawm txoj kev xav ntawm conductometric titrations hais tias rau cov dilutions uas yog infinite, ions ua nws tus kheej thiab hauv cov txheej txheem pab txhawb rau kev coj ua ntawm kev daws teeb meem. Lub hauv paus ntsiab lus tom qab qhov kev xav no hais tias anions thiab cations muaj qhov sib txawv ntawm kev coj ua.
Leej twg nrhiav tau acid puag titration?
In 1828, tus Fabkis chemist Joseph Louis Gay-Lussac thawj zaug siv titre ua lus qhia (titrer), lub ntsiab lus "kom txiav txim siab qhov concentration ntawm cov khoom hauv ib qho qauv". Volumetric tsom xam tau pib nyob rau hauv lig 18th-xyoo pua Fabkis.
Vim li cas thiaj siv conductometric titration?
"Conductometric titration yog ib homtitration nyob rau hauv uas cov electrolytic conductivity ntawm cov tshuaj tiv thaiv sib tov yog tsis tu ncua saib raws li ib tug reactant ntxiv. " Nyob rau hauv no titration conductometer yog siv rau ntsuas conductance. … Yog vim li cas nws thiaj haum rau titration ntawm cov xim daws teeb meem.
Pom zoo:
Leej twg nrhiav tau induced haum txoj kev xav?
Tus qauv tsim kom haum yog thawj zaug los ntawm Koshland hauv xyoo 1958 los piav qhia txog kev hloov pauv ntawm cov protein hauv cov txheej txheem khi. Cov qauv no qhia tau hais tias ib qho enzyme, thaum khi nrog nws cov substrate, optimizes lub interface los ntawm lub cev kev sib cuam tshuam los tsim ib tug complex qauv.
Leej twg nrhiav tau sulfuric acid?
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.
Leej twg nrhiav tau chorten kora?
Chorten Kora loj, tab sis tsis ze li qhov loj npaum li lub stupa ntawm Bodhnath hauv Nepal, tom qab ntawd nws tau ua qauv. Nws tau tsim nyob rau xyoo 1740 los ntawm Lama Ngawang Loday nco txog nws tus txiv ntxawm, Jungshu Phesan, thiab kom tshem tawm cov dab hauv zos.
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. "
