Isisombululo seSodium Bicarbonate: Indlela eya kwiSodium Hydrosulfide
I-Anhydrous i-sodium hydrosulfide
Ilungiswe njengoko kuchaziwe apha ngasentla phantsi kweemeko ezingqongqo ezingenamanzi.
Isisombululo se-NaHS samanzi
I-sodium sulfide nonahydrate (Na₂S·9H₂O) iyanyibilika emanzini asandul’ ukuhluzwa ukuze yenze i- Isisombululo se-Na₂S se-13% (w/v).
Ngaphantsi kokuxukuxa nangaphantsi 20°C, 14 g NaHCO₃ yongezwa kwi 100 ml kwesi sisombululo, nto leyo ebangela ukunyibilika kwangoko kunye nempendulo exothermic.
Emva koko kongezwa i-100 mL methanol (igcina ubushushu obungaphantsi kwama-20°C), nto leyo eyenza iikristale zeNa₂CO₃ zibe namandla.
Emva kwemizuzu eli-10, umxube uyahluzwa, kwaye intsalela ihlanjwa nge-50 mL methanol.
I-filtrate iqulethe i-≥9 g ye-NaHS kunye ne-≤0.6 g ye-Na₂CO₃ (~3.5 g ye-NaHS kunye ne-0.2 g ye-Na₂CO₃ kwi-100 mL nganye).