Njira Yopangira Sodium Bicarbonate: Njira Yopangira Sodium Hydrosulfide
2025-08-15
Wopanda madzi sodium hydrosulfide
Yokonzedwa monga tafotokozera pamwambapa pansi pa mikhalidwe yokhwima yopanda chinyezi.
Yankho la NaHS la Madzi
Sodium sulfide nonahydrate (Na₂S·9H₂O) imasungunuka m'madzi atsopano osungunuka kuti ipange 13% (w/v) yankho la Na₂S.
Pansi pa kusakaniza ndi pansi 20°C, 14 g NaHCO₃ yawonjezeredwa ku 100 mL ya yankho ili, zomwe zimayambitsa kusungunuka nthawi yomweyo ndi kuyankha kwa exothermic.
Kenako 100 mL methanol imawonjezedwa (kusunga kutentha kosapitirira 20°C), zomwe zimapangitsa kuti makhiristo a Na₂CO₃ ayambe kusungunuka.
Pambuyo pa mphindi 10, chisakanizocho chimasefedwa, ndipo chotsalacho chimatsukidwa ndi 50 mL methanol.
Filtrate ili ndi ≥9 g NaHS ndi ≤0.6 g Na₂CO₃ (~3.5 g NaHS ndi 0.2 g Na₂CO₃ pa 100 mL).