nkhani

1. Njira yoyamikira:
Kutenga hydrogen sulfide gasi ndi alkali sulfide njira (kapena caustic soda yankho). Chifukwa Hydrogen Sulfide Mafuta ndi poizoni, mayanjano amayenera kuchitika movutikira. Pofuna kupewa kuwonongeka kwa mpweya ndi hydrogen sulfide mu mpweya wamafuta, zotayika zingapo zimachitika mu mndandanda wazomwe zimapangika, ndipo ma hydrogen sulfide zomwe zimachepetsedwa mutatha kuyamwa mobwerezabwereza. Mayamwidwe amakhazikika kupeza sodium hydhilfide. Njira yake ya mankhwala:
H2s + Naoh → nahs + h2o
H2S + Na2S → 2nahs

2. Sodium Alkoxide imakumana ndi hubrogen sulfide kukonza sodium hydrosull:
Mu 150ml flask yokhala ndi chitoliro cha nthambi, onjezani 20GL mwatsopano kwambiri ndi 2g ya zidutswa zosalala ndipo palibe wotsekemera wa oxhux ndi chitoliro cha nthambi poyamba. Pamene sodium alkoxide imakhazikika, onjezerani pafupifupi 40 ml ya mitherthether mpaka ma batchi mpaka alkoxide ya sodium imasungunuka kwathunthu.
Ikani chubu chagalasi molunjika pansi pa yankho kudzera mu chitoliro cha nthambi, ndipo pitani youma hydrogen sulfide gasi (onani kuti palibe mpweya womwe ungalowe mu chitoliro cha nthambi). Khalani ndi yankho. Njira yothetsera vutoli idasefedwa kuti ichotse. Zosefera zidasungidwa mu botolo louma louma, ndi 50 ml ya mtherathe, ndipo kuchuluka kwa nahs zoyera za nahs zoyera zidakonzedwa nthawi yomweyo. Pafupifupi 110 ml ya ether imafunikira. Kupuma mtima kunasokonezedwa mwachangu, kutsukidwa katatu ndi mtheransi wowuma, wowuma, ndikuyika mu vacuumcator. Kuyera kwa malonda kumatha kufika kwa owunikira. Pofunika kuyeretsedwa kwa NAS, kumatha kusungunuka mu ethanol ndikubwezeretsanso ndi ether.

3.Sodium hydrosul madzi:
Sungunulani sodium sulfide mwatsopano mumadzi osunthika mwatsopano, kenako ndikuchepetsa mpaka 13% NA2S (W / V) yankho. 14 g wa sodium bicarbonate idawonjezeredwa ndi yankho pamwambapa (100 ml) yokhala ndi 20 ° C, nthawi yomweyo kusungunuka ndi kutuluka. Pambuyo pake 100 ml ya methanol adawonjezeredwa ndi oyambitsa komanso pansi pa 20 ° C. Pakadali pano exothemm anali atayambanso ndipo pafupifupi ma Crystaline a Crystaum carbobote adadzilimbitsa nthawi yomweyo. Pambuyo pa mphindi 0, osakaniza adasefedwa ndi kuyamwa ndipo otsalawo adatsukidwa ndi methanol (50 ml) m'magawo. Zosefera sizinali zosakwana 9 g sodium hydhilfide osati kupitirira 0,6 peresenti ya sodium carbonate. Kuzungulira kwa awiriwa ndi pafupifupi 3.5 magalamu ndi 0,2 magalamu pa 100 ml ya yankho, motero.

Nthawi zambiri timakonzekera mwa kuyamwa hydrogen sulfide ndi sodium hydroxide yankho. Zomwe zili (gawo lalikulu la sodium hydhilfide) ndi 70%, ndi dihhydrate ndipo ili mu mawonekedwe a flakes; Ngati zomwe zili m'munsi, ndichinthu chamadzimadzi, ndi ma hydrate.