ʻO ka ua ʻulaʻula paha ka sodium polysulfide precipitation. ʻOi aku ka nui o ka sodium sulfide e oxidized e ka ea i ka sodium polysulfide (e hana i ka sulfur i mea hoʻokahi, a laila hana i ka sodium polysulfide). Ke kiʻekiʻe ka index sulfur o ka sodium polysulfide, ʻulaʻula ʻeleʻele i loko o ka wai wai, a puka mai ia ma muli o ka hopena insoluble ma lalo o nā kūlana anaqueous. a me ka wai (hiki ke kākau ʻia ka pane ʻana o ka 1:6).
Ka ʻike ʻana i ke ʻano kuhikuhi o ka ua ʻulaʻula
Wehe i ka mea ʻulaʻula a holoi i nā manawa he nui me ka ethanol piha (e hoʻāʻo e holoi i ka solution sodium sulfide) e ʻike inā e hemo. , a holoi i kekahi mau manawa me ka ethanol. E lawe i kahi wai liʻiliʻi a hoʻoheheʻe i ka sulfuric acid, e ʻike inā he hydrogen sulfide e pakele (pono ʻoe e honi. Ma waho, hiki iā ʻoe ke hoʻohana i ka acetate pulu acetate a i ʻole ke alakaʻi nitrate hoʻāʻo pepa hoʻāʻo), ka ua inā he nui ka hoʻololi ʻana i ka māmā melemele a i ʻole ka waiu keʻokeʻo turbidity, ʻo ia ka huahana o ka sodium polysulfide (potassium) ka hanana. ka sodium polysulfide (potassium). Hiki ke hoʻolālā ʻia e hōʻoia inā aia ka hana carbonate (carbon tetrachloride alkali decomposition product).
Ka manawa hoʻouna: Iune-13-2022
