Kukhicitwa kweSodium Hydrosulfide ngekumuncwa kweNaOH
Indlela Levamile Yekumunca I-NaOH
Uma i-NaHS sodium hydrosulfide lokuhlushwa ifinyelela . 70%, yakha emacembe e- dihydrate.
Ngesikhatsi lokuphansi, ikhona njenge trihydrate lesemantini.
Inchubo:
I-1 L flask lenetintsamo letintsatfu leyindingilizi lephansi ifakwe i-stirrer kanye ne-reflux condenser (lehlanganiswe neshubhu lekomisa le-CaCl2).
Le flask ihlanjululwa nge nitrogen leyomile, bese ishaja nge . 200 mL (3.4 mol) i-ethanol lete emanti.
12 g (0.522 mol) yensimbi lehlantekile ye sodium ifakwa ngetincetu letincane ngaphansi kwekuvuselela kanye nekuphindze incibilike ngalokuphelele.
Lishubhu lekungena igesi lifakwa kulokusamanti, bese iH2S leyomile (yomile ngetulu kwe P2O5) iyabhubhudza nga 5–10 bubbles/sec sikhatsi lesingu 2 h ngaphansi kwekuvuselela.
Ngemuva kwekupholisa, 750 mL we ether lengenamanti yengetwa kwentela kusheshisa iNaHS sodium hydrosulfide ngalokuphelele.
Kusebenta:
Le ngcucuko ihlungwa ngekushesha (coarse frit) kwentela kuvikela kumuncwa kwemswakama.
Lokucinile kugezwa 3× nge ether lete emanti, bese komiswa ku desiccator ye vacuum (CaCl2) emahora lamanyenti.
Sivuno: 29.4 g ye ≥98% ye NaHS lehlantekile.