iindaba

1. Indlela yokufunxa:
Funxa igesi yehydrogen sulfide ngesisombululo sealkali sulfide (okanye isisombululo sesoda yecaustic).Ngenxa yokuba igesi ye-hydrogen sulfide inetyhefu, ukusabela kokufunxa kufuneka kuqhutywe phantsi koxinzelelo olubi.Ukuze kuthintelwe ukungcoliseka okukhulu komoya nge-hydrogen sulfide kwi-exhaust gas, i-absorber ezininzi zisebenza ngokulandelelana kwimveliso, kwaye umxholo we-hydrogen sulfide uyancipha ukuya kwinqanaba eliphantsi emva kokuxutywa ngokuphindaphindiweyo.Ulwelo lokufunxa lugxininiswe ukufumana i-sodium hydrosulfide.Ifomula yayo yeekhemikhali:
H2S+NaOH→NaHS+H2O
H2S+Na2S→2NaHS

2. I-sodium alkoxide idibana ne-hydrogen sulfide eyomileyo ukulungiselela i-sodium hydrosulfide:
Kwi-flask ye-150mL kunye nombhobho wesebe, yongeza i-20mL ye-ethanol e-distilled esandul 'i-distilled kunye ne-2g yeziqwenga ze-sodium zetsimbi ezinomgangatho ogudileyo kunye nomgangatho we-oxide, faka i-condenser ye-reflux kunye nombhobho wokumisa kwi-flask, kwaye utywine umbhobho wesebe kuqala.Xa i-sodium alkoxide iyancipha, yongeza malunga ne-40 ml ye-ethanol epheleleyo kwiibhetshi de i-alkoxide ye-sodium ichithwe ngokupheleleyo.
Faka ityhubhu yeglasi ngqo ezantsi kwesisombululo ngombhobho wesebe, kwaye ugqithise igesi eyomileyo ye-hydrogen sulfide (qaphela ukuba akukho moya unokungena kwiflask kumbhobho wesebe otywiniweyo).Gcwalisa isisombululo.Isisombululo sahluzwa ukususa imvula.I-filtrate yayigcinwe kwi-flask eyomileyo ye-conical, kwaye i-50 mL ye-ether epheleleyo yongezwa, kwaye isixa esikhulu se-NaHS emhlophe yemvula yana ngokukhawuleza.Itotali emalunga ne-110 mL ye-ether iyafuneka.I-precipitate yahluzwa ngokukhawuleza, ihlanjwe ngamaxesha angama-2-3 nge-ether epheleleyo, yomile, kwaye ifakwe kwi-vacuum desiccator.Ukucoceka kwemveliso kunokufikelela kubunyulu bohlalutyo.Ukuba ubunyulu obuphezulu be-NaHS buyadingeka, inokunyibilika kwi-ethanol kwaye iphinde ifakwe kwi-ether.

3.Sodium hydrosulfide ulwelo:
Yinyibilikise i-sodium sulfide nonahydrate kumanzi agalelwe umphunga asandul' ukugalelwa, kwaye emva koko uhlambulule kwisisombululo se-13% se-Na2S (W/V).I-14 g ye-sodium bicarbonate yongezwa kwisisombululo esingentla (100 mL) ngokuvuselela kwaye ngaphantsi kwe-20 ° C, ngokukhawuleza ukuchithwa kunye ne-exothermic.Emva koko i-100 ml ye-methanol yongezwa ngokuvuselela kwaye ngaphantsi kwe-20 ° C.Ngeli xesha i-exotherm yaphinda yagqithisa kwaye phantse yonke icrystalline sodium carbonate yaphuma ngokukhawuleza.Emva kwemizuzu eyi-0, umxube wahluzwa ngokufunxa kwaye intsalela yahlanjwa nge-methanol (50 mL) kwiindawo.I-filtrate yayingekho ngaphantsi kwe-9 g ye-sodium hydrosulfide kwaye ingabi ngaphezu kwe-0.6 yeepesenti ye-sodium carbonate.Ukugxininiswa kwezi zimbini malunga ne-3.5 grams kunye ne-0.2 grams nge-100 ml yesisombululo, ngokulandelanayo.

Ngokuqhelekileyo siyilungiselela ngokufunxa i-hydrogen sulfide kunye nesisombululo se-sodium hydroxide.Xa umxholo (iqhekeza elikhulu le-sodium hydrosulfide) li-70%, i-dihydrate kwaye ikwimo yeeflakes;ukuba umxholo uphantsi, yimveliso engamanzi, i-Hydrate emithathu.