Ukukhiqizwa kwe-Sodium Hydrosulfide nge-NaOH Absorption
Indlela Ejwayelekile Yokumunca i-NaOH
Lapho ukuhlushwa kwe-NaHS sodium hydrosulfide kufinyelela 70%, yakha ama-flakes e-dihydrate.
Uma kugxilwe kakhulu, ikhona njenge-trihydrate ewuketshezi.
Inqubo:
Ibhodlela eliyindilinga elinentamo ezintathu elingu-1 L lifakwe i-stirrer kanye ne-reflux condenser (exhunywe kushubhu lokomisa le-CaCl₂).
Iflaski ihlanzwa nge-nitrogen eyomile, bese ifakwa i-nitrogen I-ethanol engama-200 mL (3.4 mol) engenamanzi.
I-12 g (0.522 mol) yensimbi ehlanzekile ye-sodium ifakwa ezicucwini ezincane ngaphansi kokuxutshwa nokuvuselelwa kuze kube yilapho incibilika ngokuphelele.
Ipayipi lokungenisa igesi lifakwa oketshezini, bese i-H₂S eyomile (eyomisiwe phezu kwe-P₂O₅) ifakwa amabhamuza kumabhamuza angu-5-10/umzuzwana amahora ama-2 ngaphansi kokuxutshwa.
Ngemva kokupholisa, i-ether engama-750 mL e-anhydrous iyangezwa ukuze kuqhutshwe ngokuphelele i-NaHS sodium hydrosulfide.
Ukuqeqeshwa:
Ingxube ihlungwa ngokushesha (i-coarse frit) ukuvimbela ukumuncwa komswakama.
I-solid igezwa nge-3× nge-anhydrous ether, bese yomiswa ku-vacuum cleaner desiccator (CaCl₂) amahora amaningana.
Isivuno: 29.4 g we-≥98% i-NaHS emsulwa.