labarai

1. Hanyar sha:
Shaye iskar hydrogen sulfide tare da maganin alkali sulfide (ko maganin soda caustic). Saboda iskar hydrogen sulfide mai guba ne, yakamata a aiwatar da halayen sha a ƙarƙashin matsin lamba. Don hana yawan gurɓataccen iska ta hanyar hydrogen sulfide a cikin iskar gas, ana sarrafa abubuwa da yawa a jere a cikin samarwa, kuma abun da ke cikin hydrogen sulfide yana raguwa zuwa ƙaramin matakin bayan maimaita sha. An tattara ruwan sha don samun sodium hydrosulfide. Tsarin sinadaransa:
H2S+NaOH→NaHS+H2O
H2S+Na2S→2NaHS

2. Sodium alkoxide yana amsawa tare da busassun hydrogen sulfide don shirya sodium hydrosulfide:
A cikin filastar 150ml mai bututun reshe, ƙara 20ml na sabon distilled cikakkar ethanol da 2g na ƙarfe na sodium guda tare da santsi mai santsi kuma babu oxide Layer, shigar da reflux condenser da bututun bushewa a kan flask, sa'annan a rufe bututun reshen farko. Lokacin da sodium alkoxide ya haɗe, ƙara kusan 40 ml na cikakken ethanol a cikin batches har sai sodium alkoxide ya narkar da gaba ɗaya.
Saka bututun gilashi kai tsaye cikin kasan maganin ta cikin bututun reshe, sannan a wuce busasshen iskar hydrogen sulfide (lura cewa babu iska da za ta iya shiga cikin bututun reshen da aka rufe). Cika maganin. Maganin ya tsotsa don cire hazo. An adana tacewa a cikin busassun busassun flask, kuma an ƙara 50 ml na cikakken ether, kuma babban adadin farin NaHS ya haura nan da nan. Ana buƙatar jimlar kusan 110 ml na ether. An tace ruwan sama da sauri, an wanke shi sau 2-3 tare da cikakken ether, an goge shi, kuma an sanya shi a cikin injin bushewa. Tsaftar samfurin na iya kaiwa ga tsabtar nazari. Idan ana buƙatar NaHS mafi girma, ana iya narkar da shi a cikin ethanol kuma a sake shi da ether.

3. Sodium hydrosulfide ruwa:
Narkar da sodium sulfide nonahydrate a cikin sabon tururi mai shayarwa, sa'an nan kuma tsarma zuwa 13% Na2S (W/V) bayani. An ƙara 14 g na sodium bicarbonate zuwa bayani na sama (100 ml) tare da motsawa da ƙasa 20 ° C, nan da nan narkar da kuma exothermic. Bayan haka, an ƙara 100 ml na methanol tare da motsawa kuma ƙasa da 20 ° C. A wannan lokaci exotherm ya sake zama exothermic kuma kusan dukkanin crystalline sodium carbonate precipitated fita nan da nan. Bayan minti 0, an tace cakuda tare da tsotsa kuma an wanke ragowar da methanol (50 ml) a cikin rabo. Filtrate ya ƙunshi ƙasa da g 9 na sodium hydrosulfide kuma bai wuce kashi 0.6 na sodium carbonate ba. Matsakaicin abubuwan biyu shine kusan gram 3.5 da 0.2 grams a kowace 100 ml na bayani, bi da bi.

Yawancin lokaci muna shirya shi ta hanyar ɗaukar hydrogen sulfide tare da maganin sodium hydroxide. Lokacin da abun ciki (jama'a juzu'i na sodium hydrosulfide) shine 70%, dihydrate ne kuma yana cikin nau'in flakes; idan abun ciki ya ragu, samfurin ruwa ne, yana da Hydrate uku.