1. Kutora nzira:
Bvisa hydrogen sulfide gasi nealkali sulfide solution (kana caustic soda solution). Nekuda kwekuti hydrogen sulfide gasi ine muchetura, kuita kwekunwa kunofanirwa kuitwa pasi pekumanikidzwa kwakashata. Kuti udzivise kusvibiswa kwepamusoro kwemhepo nehydrogen sulfide mumhepo inopedza gasi, zvinwiwa zvakawanda zvinoshandiswa munhevedzano mukugadzirwa, uye hydrogen sulfide content inoderedzwa kusvika yakaderera mushure mekudzokorora zvakare. Iyo mvura yekunyura inonangana kuti iwane sodium hydrosulfide. Yayo kemikari formula:
H2S+NaOH→NaHS+H2O
H2S+Na2S→2NaHS
2. Sodium alkoxide inopindirana neyakaoma hydrogen sulfide kugadzira sodium hydrosulfide:
Mubhokisi re150mL rine pombi yebazi, wedzera 20mL yeabsolute absolute ethanol ichangobva kunyungudutswa uye 2g yesimbi sodium zvidimbu zvine nzvimbo yakatsetseka uye isina oxide layer, isa reflux condenser uye pombi yekuomesa paflask, uye simbisa pombi yebazi kutanga. Kana iyo sodium alkoxide yanaya, wedzera nezve 40 ml yeabsolute ethanol mumabhechi kusvika sodium alkoxide yanyungudika zvachose.
Isa chubhu yegirazi yakananga pasi pemushonga kuburikidza nepombi yebazi, uye pfuura yakaoma hydrogen sulfide gasi (ona kuti hapana mweya unogona kupinda muflask mupombi yebazi yakavharwa). Gutisa mhinduro. Mushonga wacho wakasvetwa kuti ubvise mvura. Iyo filtrate yakachengetwa muyakaoma conical flask, uye 50 mL yeabsolute ether yakawedzerwa, uye huwandu hukuru hweNaHS chena precipitate yakanaya pakarepo. Huwandu hunosvika 110 mL yeether inodiwa. Iyo mvura yakakurumidza kusefa, yakagezwa 2-3 nguva neabsolute ether, yakabviswa yakaoma, uye yakaiswa muvacuum desiccator. Kuchena kwechigadzirwa kunogona kusvika pakuchena kwekuongorora. Kana kuchena kwepamusoro kweNaHS kuchidiwa, inogona kunyungudutswa mu ethanol uye kudzokororwa ne ether.
3.Sodium hydrosulfide mvura:
Dissolve sodium sulfide nonahydrate mumvura ichangoburwa yakapfava, wobva wadzikisa kusvika ku13% Na2S (W/V) solution. 14 g ye sodium bicarbonate yakawedzerwa kune mhinduro iri pamusoro (100 mL) nekukurudzira uye pasi pe20 ° C, pakarepo kupera uye exothermic. Zvadaro 100 ml yemethanol yakawedzerwa nekukurudzira uye pasi pe20 ° C. Panguva ino iyo exotherm yaive zvakare exothermic uye inenge yese yecrystalline sodium carbonate yakadonha pakarepo. Mushure memaminitsi e0, musanganiswa wacho wakasvibiswa nekusveta uye zvakasara zvakashambidzwa nemethanol (50 mL) muzvikamu. Iyo filtrate yaive isingasviki 9 g ye sodium hydrosulfide uye isingasviki 0.6 muzana ye sodium carbonate. Izvo zviyero zvezviviri izvi zvinenge 3.5 gramu uye 0.2 gramu pa 100 ml yemhinduro, zvichienderana.
Isu tinowanzo gadzira nekutora hydrogen sulfide ine sodium hydroxide solution. Apo zvinyorwa (chikamu chechikamu che sodium hydrosulfide) chiri 70%, iyo dihydrate uye iri mumhando yeflakes; kana zvirimo zvakaderera, iri mvura chigadzirwa, iri matatu Hydrate.
Nguva yekutumira: Feb-23-2022
