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頁籤選單縮合
題名 | A Kinetic Study of Lodine Molecule Oxidation by Aqueous Hydrogen Peroxymonosulfate=過氧硫酸氫根離子氧化碘分子的反應動力學 |
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作 者 | 李少榕; 邱瑞妙; | 書刊名 | 高雄師大學報. 自然科學與科技類 |
卷期 | 34 2013.06[民102.06] |
頁次 | 頁105-112 |
分類號 | 460.02 |
關鍵詞 | 動力學; 過氧硫酸氫根離子; 碘分子; Kinetics; Peroxymonosulfate; Iodine; |
語文 | 英文(English) |
中文摘要 | 過氧硫酸氫根離子氧化碘分子成碘酸根離子的反應,依擬一級動力學的方式 (過氧硫酸氫根離子過量 ),在 25℃、pH值範圍為 2.71-3.62的水溶液中完整地被探討。碘分子消失的速率分別與過氧硫酸氫根離子及碘分子的濃度成比,且水溶液中的 pH值增加反應速率增快。此反應的反應速率定律式為: −d[I ] = k[HSO5]T [I 2] 其中2 −dtk = [Hk ] [ k ] K ,Ka2是 H2SO5的第二解離常數, k1 = 0.57 M–1s–1、k2 = 3.01 × 106M–1s–1。 |
英文摘要 | This study investigated the peroxymonosulfate oxidation of iodine to iodate under pseudo-first-order conditions (with excess HSO5-) in buffered aqueous solutions at pH 2.71–3.62 at 25 °C. The rates of iodine decay are first order in both iodine and peroxymonosulfate ion concentrations and increase rapidly with increasing pH. The d[I 2] − reaction can be described with the following rate law: −= k[HSO5]T [I 2 ] , wheredt k kK –1 k =, Ka2 is the second dissociation constant of H2SO5, k1 = 0.57 M–1s, [H ] [] and k2 = 3.01 × 106 M–1s–1. |
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