H 5 IO 6 (227.94). As an I Ⅶ oxo acid, it is more stable than periodic acid HIO 4. Commercially, this substance is called periodic acid, but the IUPAC distinguishes between the two. Melting point is approximately 130 °C. The following equilibrium exists in an aqueous solution of periodic acid: H 5 IO 6 H + + H 4 IO 6 - ( K 1×10 -3 ) H 4 IO 6 - IO 4 - + 2H 2 O( K 29) H 4 IO 6 - H + + H 3 IO 6 2- ( K 2×10 -7 ) In aqueous solutions at 25 °C, IO 4 - is the predominant ion. [CAS 10450-60-9] Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition |
H5IO6(227.94).IⅦのオキソ酸としては,過ヨウ素酸HIO4より安定である.市販品では,この物質を過ヨウ素酸とよぶが,IUPACでは両者を区別している.融点約130 ℃.過ヨウ素酸水溶液中では,次の平衡が成立している. H5IO6 H+ + H4IO6-(K 1×10-3) H4IO6- IO4- + 2H2O(K 29) H4IO6- H+ + H3IO62-(K 2×10-7) 25 ℃ の水溶液ではIO4-がおもなイオンである.[CAS 10450-60-9] 出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報 |
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