Potasiuma iodide

potasiuma iodide (KI) o ka paʻakai o ka hydriodicʻakika. Ma helehelena ia mea he paa colorless mea pōaka waiwai me ke kupa-hoʻokino nā pōaka. Potasiuma iodide ma ka lewa ma ka paio hahana maoli nō paha ma ka waiū i ka malamalama yellowing ma muli o ka o oxygen'okesaside o ka iodine Ion i elemental iodine. Me ka mahuahua ana wela i ka solubility o ka paʻakai i loko o ka wai, piʻi pū. I ka 100 g. O ka wai, i mea hoʻoheheʻe 128 g. O ka paʻakai ma 0 ° C, 145 g. Ma 20 ° C, 176 g. Ma 60 ° C, 209 g. Ma 100 ° C. Ke molar nuipa o ka hui ana o 166,00277 g. / Mol. Ke refractive inideka ka 1,667. Nuʻa 3.13 g. / Cm³. Heheʻe wahi 686 ° C. Ka baila aʻela i wahi o 1330 ° C. Potasiuma Iodide hygroscopic emi (absorbs ka wai ma ka haiia emi) ma mua me ka paʻakai iodide, no laila ia ka hiki pono o ka hana.

Potasiuma iodide mea he mehana hoemi hope paha, ka mea, ua hikiwawe oxidized ma chlorine: 2KI + Cl2 → 2KCl + I2. Ua Ua reacted me ka iodine, ma ia ho okumu i Lugol pāʻoihana: KI + I2 → KI3. Ke potasiuma paʻakai o hydriodicʻakika hiki e hoomakaukau ia e ka naoh o ka iodine me ka potasiuma hydroxide 6KOH + 3I2 = 5KI + KIO3 + 3H2O ka ho'ēmiʻana a potasiuma iodate kalapona 2KIO3 + 3C = 2KI + 3CO2. Ka melemele kala like 'ole o ka paakai hou e hoike ana i ka'okesaside o iodide e iodine e like me ka naoh helu kaulike. 4KI + 2CO2 + O2 → 2K2CO3 + 2I2.

Ma ke ano maoli, iodine mea keia wahi, akā, he mea pohihihi keia hehee ai, mai kona maʻiʻo ma nā mea a pau ma kona ano maoli kumu mea negligible. E like me nā halogens, wehewehe aku ma ka reactivity kiʻekiʻe, ua loaʻa maʻamau i loko o ka palapala o ka hui, oia, iodides o ka mekala 'åkilikai ke hooheheeia paʻakai a me ka potasiuma, akā, (e like nā halogen) i loko o ka palapala o iodates, mea hoʻoheheʻe i loko o ka wai. Naʻe, ka mea,ʻaʻole loa e kū nei me ka naikokene iodide (IN3), no ka mea, ua nui ka poe, a hoʻomaka koke ke kūlana me ka hoʻohanuʻana e pili ana. Ma ka moana wai paha mai ka lola honua kumu iodides a me iodates na kaha like kokekau dala. Mai potasiuma iodide Ua wailana i loko o ka wai, i ka iodine Ion pau i loaʻa i loko o ka moana, meaola līoho a me nā iʻa. MeaʻAi O Ke Kai o ka papa kuhikuhiE kumu o kanakaʻai ana o ka iodine, e like me ka mea, aia no iloko olaila na manawa he nui hou aku iodine i huiʻia ma mua o ka mea ola e noho i ka aina. A hoʻokumu paʻa maka mea no ka hanalima? Iecaianoaaiiuo o ka iodine i ka waiʻeli a me kekahi mauʻano o ka līoho.

Potasiuma iodide na ma kaʻeli wai hoʻohana ma ka hana, e paka iodine: KI + Cl2 → KCl2 + I2. No hoi, ka mea, ua hoʻomano hoʻohana me ke kumu o iodide Ion. I ka mākau kemika, potasiuma iodide ua hoʻohana 'ia no ka redox iodometric titration. Pepa, pulu loa i ka pāʻoihana o ka paakai a me ka pia, e kokua hooholo qualitatively ke alo o ka chlorine,'okikene kolu a me nā oxidants, ma ke alo o ka iodine i ua anao? Aou hoʻololi kemikala a me ka pia kapa komo iā ia ma luna o ka pepa huli uliuli. Ua Ua hoʻohana 'ia me ka meaʻai mea hoʻonui i ka holoholona hānai a me ka kanaka i ka ai, ma ka liʻiliʻi mea, endemic no ka hooulu ana o ka Kāohi (ho'ākea thyroid gland) maʻi, i mea pinepine i loaʻa i loko o ka helu o Geographic wahi aie i maoli deficiency o ka iodine, potasiuma iodide, a me potasiuma iodate, ua hou ia, he pono ole ka paʻakai. Ka mea, ke'ōlelo loaa ka ai huahana ua kapaia iodized paʻakai. Ka palapala hoʻokō pūnaewele au o ia i ka paakai ua kaupalena ', no ka mea, ma manawa, ma lalo o ka aoao o ka oi o ka o oxygen a me ke kalapona'okikene lua, KI lohi oxidized i ka mea hiki ke hooheheeia kalepona a me elemental iodine, i ua laila evaporated.

I ka lapaau, potasiuma iodide ua hoʻohana 'ia me ka medicament. Potasiuma iodide mea i loaʻa i loko o kekahi laʻau heluna ano: na papa, ku una pāʻoihana, ho film kapa komo iā ia papa, maka kulu, chewable papa. Lapaʻauʻia compensate iodine nele i loko o ke kino, i antithyroid (thyroid inhibit ka biosynthesis o hormones), mucolytic (liquefied akemāmā sputum, a kōkua kona auaiaea), expectorant, Anati-fungal, o ke kemu, radioprotective (i malama thyroid pāhawewe, a ua ālai 'omo o kona radioiodine ) kanawai. MEA paipai laʻau heluna ma ka hihia o ke piʻoloke pili radioactive iodine hilinaʻi nui ma luna o kona mau makahiki a me ka mea.

• no ka poʻe ma luna o ka makahiki 12 - 130 mg no ka lā;
• mai ka 3 a hiki i 12 makahiki - 65 mg no ka lā;
• elemakule 1 i 36 mahina - 32 mg no ka lā;
• na keiki ma lalo o ka makahiki o 1 malama - 16 mg no ka lā.

Ka mea i waiho aku ai no ka Kāohiʻana o ka potasiuma iodide i kanaka mua ma mua o 40 makahiki.