Te Hanganga o te Hauwaihaupū Konutai mā te Ngongo NaOH
Tikanga Ngongo NaOH Tuku Iho
Ina tae te kukū o te NaHS konutai hauwai sulfide 70%, ka hanga he maramara waihāiti.
I ngā kukū iti iho, ka noho hei wai waikawa toru.
Tukanga:
Kei roto i tētahi pounamu porowhita kaki-toru 1 rita he whakaoho me te pūwhakamātao reflux (e hono ana ki tētahi ngongo whakamaroke CaCl₂).
Ka horoia te pounamu ki te hauota maroke, kātahi ka whakakīia ki 200 mL (3.4 mol) etanoru waikore.
Ka tāpirihia he 12 karamu (0.522 mol) o te konganuku konutai ma ki ngā wahi iti, me te whakaoho, ka whakahokia ki te wai kia memeha rawa.
Ka whakauruhia he ngongo hau ki roto i te wai, ka pupuhihia te H₂S maroke (kua whakamaroketia ki runga i te P₂O₅) i te tere o te 5–10 mirumiru/hekton mō te 2 hāora me te whakaoho.
I muri i te whakamatao, ka tāpirihia he 750 mL o te etera waikore hei whakarewa i te NaHS konutai hauwai sulfide kia tino puta.
Whakamātautau:
Ka hohoro te tātari i te ranunga (ka parai matotoru) hei ārai i te mimiti o te makuku.
Ka horoia te totoka 3× ki te etera kore wai, kātahi ka whakamarokehia i roto i te mīhini whakamaroke korehau (CaCl₂) mō ētahi haora.
Hua: 29.4 karamu o te ≥98% NaHS parakore.