2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Kev piav qhia: Orthotolidine yog cov kua tsis muaj xim organic uas tau oxidized rau hauv xim dajcompound hu ua Holoquinone.
Yuav ua li cas thaum chlorine reacts nrog dej?
Chlorine yuav hnov mob hauv dej los tsim cov kua qaub hypochlorous, uas tuaj yeem sib cais rau hauv hydrogen thiab hypochlorite ions , raws li Eqn (1). Cov tshuaj tiv thaiv no tseem ceeb heev, vim tias lub zog tua kab mob ntawm HOCl, hypochlorous acid, yog li 40-80 npaug ntawm OCl-, hypochlorite.
Thaum twg cov tshuaj chlorine ntxiv thiab cov txheej txheem ntawm kev kho cov dej yog hu ua?
Txoj kev daws teeb meem. Piav: Super Chlorination: (i) Thaum cov tshuaj chlorine ntau dhau (5 txog 15 mg / l) ntxiv thaum muaj kev sib kis xws li nws muab cov seem ntawm 1 mus rau 2 mg / l dhau qhov tawg yog hu ua super chlorination.
Cov hauv qab no twg yog cov qauv ntawm chlorination?
Cov tshuaj tua kab mob sib txawv yog cov tshuaj tua kab mob, yooj yim chlorination, super-chlorinationua raws li dechlorination, thiab poob siab chlorination. Lawv sib txawv ntawm cov tshuaj chlorine siv.
Qhov twg yog cov tshuaj dawb chlorine thov rau cov txheej txheem chlorination Mcq?
Dab tsi ntawm cov hauv qab no hu ua chlorine muaj pub dawb? Kev piav qhia: Cov tshuaj chlorine uas muaj nyob rau hauv dej li hypochlorous acid, hypochlorite ions, molecular chlorine yog lub npe hu ua dawb muaj chlorine.
Pom zoo:
Los ntawm cov khoom tsim thaum lub sij hawm tsim cov bakelite yog?
Nyob rau hauv rooj plaub ntawm bakelite phenol thiab formaldehyde condense los tsim cov monomer muab H2O raws li cov khoom lag luam. Bakelite tseem hu ua co-polymer. Cov tshuaj tiv thaiv: Phenol reacts nrog formaldehyde los tsim o-Hydroxy methyl phenol.
Puas yog cov roj chlorine yog cov khoom lossis cov khoom sib xyaw?
Chlorine yog nyob rau hauv pawg 17 ntawm lub sij hawm lub sij hawm, tseem hu ua lub halogens, thiab tsis pom raws li lub caij nyob rau hauv cov xwm - tsuas yog ib tug compound. Feem ntau ntawm cov no yog ntsev, los yog sodium chloride, thiab cov poov tshuaj compounds sylvite (los yog potassium chloride) thiab carnallite (potassium magnesium chloride hexahydrate).
Thaum twg cov xim pleev xim tau tsim?
Cov khoom enameled ntxov tshaj plaws tau sau hnub tim rau 13th caug xyoo BC, thaum Mycenaean goldsmiths inlaid enamels rau hauv kub nplhaib. Txij thaum ntawd los, cov kab lis kev cai thoob plaws ntiaj teb tau koom ua ke rau hauv lawv cov ntawv kos duab.
Puas yog chlorine oxidized lossis txo?
Tus lej oxidation oxidation naj npawb Qhov nce hauv lub xeev oxidation ntawm ib qho atom, los ntawm cov tshuaj tiv thaiv, hu ua oxidation; Kev txo qis hauv oxidation lub xeev hu ua reduction. Cov kev cuam tshuam no suav nrog kev hloov pauv ntawm cov khoom siv hluav taws xob:
Koj puas tuaj yeem pleev xim pleev xim rau ntawm daim ntaub tsis muaj xim?
Unprimed canvas yuav tsum tau pleev xim ua ntej yuav pleev ximrau vim cov roj hauv cov xim roj yuav nws thiaj li rot cov canvas fibers tam sim ntawd. Yog li cov xim thiab cov ntaub yuav tsum tau muab sib cais los ntawm qhov loj me thiab primer yog tias koj xav kom koj cov tha xim mus ntev.
