Otinga Paikāpōnate Konutai: He Ara ki te Waikawa Sulfide Konutai
Korewai konutai hauwaiwhāiti
I whakaritea kia rite ki te whakaahuatanga i runga ake nei i raro i ngā tikanga tino kore makuku.
Otinga NaHS wai
Ka whakarewaina te konutai sulfide nonahydrate (Na₂S·9H₂O) ki te wai hou kua whakamātaohia hei hanga i tētahi 13% (w/v) otinga Na₂S.
I raro i te whakaoho me raro iho 20°C, 14 karamu NaHCO₃ ka tāpirihia ki 100 mL o tēnei otinga, ka puta ai te wairewatanga tonu me te tauhohenga werawera.
Kātahi ka tāpirihia he 100 mL o te methanol (kia mau tonu te pāmahana i raro i te 20°C), kia puta ai ngā tioata Na₂CO₃.
I muri i te 10 meneti, ka tātarihia te ranunga, ā, ka horoia te toenga ki te 50 mL o te methanol.
Kei roto i te tātari he ≥9 karamu NaHS me te ≤0.6 karamu Na₂CO₃ (~3.5 karamu NaHS me te 0.2 karamu Na₂CO₃ mō ia 100 mL).