<p><b>過氧化鉀</b>是一種無機化合物，化學式為<span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle K_{2}O_{2}}">
  <semantics>
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    <annotation encoding="application/x-tex">{\displaystyle K_{2}O_{2}}</annotation>
  </semantics></math></span></span>。
</p><p>過氧化鉀與水反應產生氫氧化鉀和氧氣：
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 2K_{2}O_{2}+2H_{2}O\rightarrow 4KOH+O_{2}}">
  <semantics>
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          <mi>O</mi>
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    <annotation encoding="application/x-tex">{\displaystyle 2K_{2}O_{2}+2H_{2}O\rightarrow 4KOH+O_{2}}</annotation>
  </semantics></math></span></span></dd></dl><h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>過氧化鉀可以由鉀與空氣中氧氣反應製得，同時還產生氧化鉀和超氧化鉀。</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {2\ K+\ O_{2}\longrightarrow \ K_{2}O_{2}} }">
  <semantics>
    <mrow class="MJX-TeXAtom-ORD">
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          <mi mathvariant="normal">K</mi>
          <mo>+</mo>
          <mtext> </mtext>
          <msub>
            <mi mathvariant="normal">O</mi>
            <mrow class="MJX-TeXAtom-ORD">
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          </msub>
          <mo stretchy="false">⟶<!-- ⟶ --></mo>
          <mtext> </mtext>
          <msub>
            <mi mathvariant="normal">K</mi>
            <mrow class="MJX-TeXAtom-ORD">
              <mn>2</mn>
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          </msub>
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    <annotation encoding="application/x-tex">{\displaystyle \mathrm {2\ K+\ O_{2}\longrightarrow \ K_{2}O_{2}} }</annotation>
  </semantics></math></span></span></dd></dl><p>它也可以由氧化鉀和氧氣接觸而成。
</p>
<h2><span id=".E6.80.A7.E8.B4.A8"></span><span id="性质">性質</span></h2>
<p>過氧化鉀是一種黃白色固體，不會自己燃燒，但接觸到可燃物就會劇烈反應。它遇水劇烈分解。</p><p>過氧化鉀的標準摩爾生成焓 ΔH<sub>f</sub><sup>0</sup> 為 −496 kJ/mol。</p>
<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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**過氧化鉀**是一種無機化合物，化學式為 $K_{2}O_{2}$ 。

過氧化鉀與水反應產生氫氧化鉀和氧氣：

　
: $2K_{2}O_{2}+2H_{2}O\rightarrow 4KOH+O_{2}$

## 製備

過氧化鉀可以由鉀與空氣中氧氣反應製得，同時還產生氧化鉀和超氧化鉀。

　
: $\mathrm {2\ K+\ O_{2}\longrightarrow \ K_{2}O_{2}} $

它也可以由氧化鉀和氧氣接觸而成。

## 性質

過氧化鉀是一種黃白色固體，不會自己燃燒，但接觸到可燃物就會劇烈反應。它遇水劇烈分解。

過氧化鉀的標準摩爾生成焓 ΔHf0 為 −496 kJ/mol。

## 參考資料
17014-71-0