<p><b>磷二氫化鉀</b>是一種無機化合物，化學式為KPH<sub>2</sub>。
</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>PH<sub>3</sub>和KOH的DMSO懸浮液反應，可以得到KPH<sub>2</sub>，形成黃色溶液：</p>
<dl><dd>PH<sub>3</sub> + 2 KOH → PH<sub>2</sub><sup>-</sup> + K<sup>+</sup> + KOH·H<sub>2</sub>O</dd></dl><h2><span id=".E5.8C.96.E5.AD.A6.E6.80.A7.E8.B4.A8"></span><span id="化学性质">化學性質</span></h2>
<p>KPH<sub>2</sub>受熱分解：</p>
<dl><dd>3 KPH<sub>2</sub> → 2 PH<sub>3</sub> + K<sub>3</sub>P</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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**磷二氫化鉀**是一種無機化合物，化學式為 KPH2。

## 製備

PH3 和 KOH 的 DMSO 懸浮液反應，可以得到 KPH2，形成黃色溶液：

　
: PH3 + 2 KOH → PH2- + K+ + KOH·H2O

## 化學性質

KPH2 受熱分解：

　
: 3 KPH2 → 2 PH3 + K3P

## 參考資料
13659-67-1