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二クロム酸 - miniwiki

二クロム酸

提供: miniwiki

移動先:案内、検索

ファイル:ChromicAcid.png

左: 二クロム酸、右: クロム酸

二クロム酸（にクロムさん、dichromic acid）とは、示性式が H₂Cr₂O₇ と表されるクロムのオキソ酸である。クロム酸が脱水縮合することで生成する。ナトリウムやカリウムなどの塩は試薬として用いられる。

性質

強力な酸化剤である。

クロム酸との間に以下の平衡が存在する。pH1以下の強酸性条件、もしくは、pH7以上の塩基性条件でクロム酸構造が優位となる。

<ce>{2CrO4^{2-}} + 2H3O^+\ \rightleftarrows\ {Cr2O7^{2-}} + 3H2O</ce>

案内メニュー

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二クロム酸

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