Ukuveliswa kweSodium Hydrosulfide ngeNaOH Absorption
Indlela eqhelekileyo yokufunxa i-NaOH
Xa i-NaHS sodium hydrosulfide concentration ifikelela kwi- 70%, yenza iiflekisi ze-dihydrate.
Xa kumanqanaba aphantsi, ikhona njenge-trihydrate engamanzi.
Inkqubo:
Iflaski ejikelezayo enentamo ezintathu ene-1 L ixhotyiswe ngestirrer kunye ne-reflux condenser (eqhagamshelwe kwityhubhu yokomisa yeCaCl₂).
Iflaski ihlanjululwa ngenitrogen eyomileyo, ize itshajwe I-ethanol engamanzi engama-200 mL (3.4 mol).
I-12 g (0.522 mol) yesinyithi esicocekileyo sodium yongezwa kwiziqwenga ezincinci xa ixutywa kwaye ivuseleleke ide inyibilike ngokupheleleyo.
Ityhubhu yokungenisa igesi ifakwa kulwelo, kwaye i-H₂S eyomileyo (eyomileyo phezu kwe-P₂O₅) ifakwa amaqamza kwiibhamuza ezi-5–10/imizuzwana iiyure ezi-2 xa ixutywa.
Emva kokupholisa, i-750 mL ye-anhydrous ether yongezwa ukuze ikhuphe i-NaHS sodium hydrosulfide ngokupheleleyo.
Sebenzela ukwenyuka:
Lo mxube uyahluzwa ngokukhawuleza (i-coarse frit) ukuze kuthintelwe ukufunxwa komswakama.
I-solid ihlanjwa nge-3× nge-anhydrous ether, ize yomiswe kwi-vacuum desiccator (CaCl₂) kangangeeyure eziliqela.
Isivuno: 29.4 g ye-≥98% ye-NaHS ecocekileyo.