<p><b>硒酸鎳</b>是鎳的硒酸鹽，化學式 NiSeO<sub>4</sub>。
</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>硒酸鎳可以由碳酸鎳和硒酸反應而成。</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {NiCO_{3}\ +H_{2}SeO_{4}\rightarrow NiSeO_{4}+H_{2}O+CO_{2}\uparrow } }">
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    <annotation encoding="application/x-tex">{\displaystyle \mathrm {NiCO_{3}\ +H_{2}SeO_{4}\rightarrow NiSeO_{4}+H_{2}O+CO_{2}\uparrow } }</annotation>
  </semantics></math></span></span></dd></dl><h2><span id=".E6.80.A7.E8.B4.A8"></span><span id="性质">性質</span></h2>
<p>硒酸鎳六水合物是綠色固體。 它是四方晶系的，空間群 P4<sub>1</sub>2<sub>1</sub>2 (No. 92)。在 100 °C 時，硒酸鎳六水合物緩慢失水成四水合物，空間群 P2<sub>1</sub>/n (No. 14)。在 510 °C 時，硒酸鎳直接分解成亞硒酸鎳，進一步加熱會分解成氧化鎳和二氧化硒。</p>
<dl><dd><dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {NiSeO_{4}\cdot 6H_{2}O\ {\xrightarrow[{-H_{2}O}]{100\,^{\circ }C}}\ NiSeO_{4}\cdot 4H_{2}O\ {\xrightarrow[{-H_{2}O}]{300\,^{\circ }C}}\ NiSeO_{4}\cdot H_{2}O\ {\xrightarrow[{-H_{2}O}]{390\,^{\circ }C}}\ NiSeO_{4}\ {\xrightarrow[{-O_{2}}]{510\,^{\circ }C}}\ NiSeO_{3}\ {\xrightarrow[{-SeO_{2}}]{690\,^{\circ }C}}\ NiO} }">
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    <annotation encoding="application/x-tex">{\displaystyle \mathrm {NiSeO_{4}\cdot 6H_{2}O\ {\xrightarrow[{-H_{2}O}]{100\,^{\circ }C}}\ NiSeO_{4}\cdot 4H_{2}O\ {\xrightarrow[{-H_{2}O}]{300\,^{\circ }C}}\ NiSeO_{4}\cdot H_{2}O\ {\xrightarrow[{-H_{2}O}]{390\,^{\circ }C}}\ NiSeO_{4}\ {\xrightarrow[{-O_{2}}]{510\,^{\circ }C}}\ NiSeO_{3}\ {\xrightarrow[{-SeO_{2}}]{690\,^{\circ }C}}\ NiO} }</annotation>
  </semantics></math></span></span></dd></dl></dd></dl><p>它和硒酸鉀在熱的水溶液中冷卻結晶，可以得到藍綠色的K<sub>2</sub>[Ni(H<sub>2</sub>O)<sub>6</sub>](SeO<sub>4</sub>)<sub>2</sub>。</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {K_{2}SeO_{4}\ +NiSeO_{4}+6H_{2}O\rightarrow K_{2}[Ni(H_{2}O)_{6}](SeO_{4})_{2}} }">
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    <annotation encoding="application/x-tex">{\displaystyle \mathrm {K_{2}SeO_{4}\ +NiSeO_{4}+6H_{2}O\rightarrow K_{2}[Ni(H_{2}O)_{6}](SeO_{4})_{2}} }</annotation>
  </semantics></math></span></span></dd></dl><h2><span id=".E5.8F.82.E8.80.83.E8.B5.84.E6.96.99"></span><span id="参考资料">參考資料</span></h2>
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**硒酸鎳**是鎳的硒酸鹽，化學式 NiSeO4。

## 製備

硒酸鎳可以由碳酸鎳和硒酸反應而成。

　
: $\mathrm {NiCO_{3}\ +H_{2}SeO_{4}\rightarrow NiSeO_{4}+H_{2}O+CO_{2}\uparrow } $

## 性質

硒酸鎳六水合物是綠色固體。 它是四方晶系的，空間群 P41212 (No. 92)。在 100 °C 時，硒酸鎳六水合物緩慢失水成四水合物，空間群 P21/n (No. 14)。在 510 °C 時，硒酸鎳直接分解成亞硒酸鎳，進一步加熱會分解成氧化鎳和二氧化硒。

　
: : $\mathrm {NiSeO_{4}\cdot 6H_{2}O\ {\xrightarrow[{-H_{2}O}]{100\,^{\circ }C}}\ NiSeO_{4}\cdot 4H_{2}O\ {\xrightarrow[{-H_{2}O}]{300\,^{\circ }C}}\ NiSeO_{4}\cdot H_{2}O\ {\xrightarrow[{-H_{2}O}]{390\,^{\circ }C}}\ NiSeO_{4}\ {\xrightarrow[{-O_{2}}]{510\,^{\circ }C}}\ NiSeO_{3}\ {\xrightarrow[{-SeO_{2}}]{690\,^{\circ }C}}\ NiO} $

它和硒酸鉀在熱的水溶液中冷卻結晶，可以得到藍綠色的 K2[Ni(H2O)6](SeO4)2。

　
: $\mathrm {K_{2}SeO_{4}\ +NiSeO_{4}+6H_{2}O\rightarrow K_{2}[Ni(H_{2}O)_{6}](SeO_{4})_{2}} $

## 參考資料
10101-99-2