<p><b>砷酸銀</b>是一種無機化合物，化學式為Ag<sub>3</sub>AsO<sub>4</sub>。它可用於鑑別磷酸鹽和砷酸鹽溶液的定性分析。（Ag<sub>3</sub>PO<sub>4</sub>為黃色沉澱）</p>
<h2><span id=".E5.88.B6.E5.A4.87.E5.8F.8A.E6.80.A7.E8.B4.A8"></span><span id="制备及性质">製備及性質</span></h2>
<p>砷酸銀可用下述反應製備：
</p>
<dl><dd>3 AgNO<sub>3</sub> + Na<sub>2</sub>HAsO<sub>4</sub> → Ag<sub>3</sub>AsO<sub>4</sub>↓ + 2 NaNO<sub>3</sub> + HNO<sub>3</sub></dd></dl><p>砷酸銀難溶於水（Ksp = 1.0×10<sup>−22</sup>）。可溶於酸或氨水。
</p>
<h2><span id=".E5.8F.82.E8.80.83.E6.96.87.E7.8C.AE"></span><span id="参考文献">參考文獻</span></h2>

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**砷酸銀**是一種無機化合物，化學式為 Ag3AsO4。它可用於鑑別磷酸鹽和砷酸鹽溶液的定性分析。（Ag3PO4 為黃色沉澱）

## 製備及性質

砷酸銀可用下述反應製備：

　
: 3 AgNO3 + Na2HAsO4 → Ag3AsO4↓ + 2 NaNO3 + HNO3

砷酸銀難溶於水（Ksp = 1.0×10−22）。可溶於酸或氨水。

## 參考文獻
13510-44-6