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[". �化学の小知识分享-Iヨウ化カリウム

2018-11-16View Original

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I.. KIの化学式。無色の結晶または白色の粉末で、濃厚な苦味と塩味があり、少しだけ湿気で溶けやすい。密度3.13g/cm³、沸点68℃、沸点330℃。水、エタノール、プロパノール、グリセリンに溶けやすく、エタリックには溶けない。ヨウ素と氢氧化カリウムと反応し、甲酸(または木炭)で還元してヨウ酸カリウムを生成し、これでヨウ化カリウムを得ることができる:6KOH+3I25KII1.KIO3I3HIOKIO3I3HCOOKI3CO↑I3H水に触れると(特に酸性条件下では)、ヨウ化カリウムはゆっくりとヨウ素を放出し、黄色くなる。ヨウ化カリウ Mourinhoは、ヨウ素と特定の难溶金属ヨウ化物の助溶� agent

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