<p><b>溴酸鋇</b>是鋇的溴酸鹽，化學式 Ba(BrO<sub>3</sub>)<sub>2</sub>。
</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>溴酸鋇可以由氯化鋇或乙酸鋇和溴酸鉀反應而成。</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {BaCl2 + 2KBrO3 -&gt; Ba(BrO3)2 + 2KCl}}}">
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<dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {(CH3COO)2Ba + 2KBrO3 -&gt; Ba(BrO3)2 + 2CH3COOK}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\ce {(CH3COO)2Ba + 2KBrO3 -&gt; Ba(BrO3)2 + 2CH3COOK}}}</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>溴酸鋇的結構類似 α-碘酸鋇，為單斜晶系，空間群 C2/c (No. 15)，晶格參數 <i>a</i> = 1332 pm，<i>b</i> = 790 pm，<i>c</i> = 858 pm 和 <i>β</i> = 134,2°。 溴酸鋇在水中的溶解度隨溫度上升而上升。在 0 °C時，溶解度為 2.86 g/L， 25 °C 時為 7.88 g/L，在 99.65 °C時為 53.9 g/L。溴酸鋇通常以一水合物 Ba(BrO<sub>3</sub>)<sub>2</sub> · H<sub>2</sub>O 存在，於 190 °C 失水。 它也是單斜晶系的，空間群 I2/c (No. 15)，晶格參數 <i>a</i> = 907.0 pm，<i>b</i> = 789.5 pm，<i>c</i> = 963.0 pm 和 <i>β</i> = 93.26°。它的二水合物也是已知的，為單斜晶系，空間群 C2/c (No. 15)，晶格參數 <i>a</i> = 1043 pm，<i>b</i> = 719.5 pm，<i>c</i> = 837.5 pm，<i>β</i> = 113.6°。</p><p>在 265 °C時，溴酸鋇分解成溴化鋇和氧氣。</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {Ba(BrO3)2 -&gt; BaBr2 + 3O2 ^}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\ce {Ba(BrO3)2 -&gt; BaBr2 + 3O2 ^}}}</annotation>
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**溴酸鋇**是鋇的溴酸鹽，化學式 Ba (BrO3)2。

## 製備

溴酸鋇可以由氯化鋇或乙酸鋇和溴酸鉀反應而成。

　
: ${\ce {BaCl2 + 2KBrO3 -> Ba(BrO3)2 + 2KCl}}$

　
: ${\ce {(CH3COO)2Ba + 2KBrO3 -> Ba(BrO3)2 + 2CH3COOK}}$

## 性質

溴酸鋇的結構類似 α- 碘酸鋇，為單斜晶系，空間群 C2/c (No. 15)，晶格參數 _a_ = 1332 pm，_b_ = 790 pm，_c_= 858 pm 和 _β_= 134,2°。 溴酸鋇在水中的溶解度隨溫度上升而上升。在 0 °C 時，溶解度為 2.86 g/L， 25 °C 時為 7.88 g/L，在 99.65 °C 時為 53.9 g/L。溴酸鋇通常以一水合物 Ba (BrO3)2 · H2O 存在，於 190 °C 失水。 它也是單斜晶系的，空間群 I2/c (No. 15)，晶格參數 _a_ = 907.0 pm，_b_ = 789.5 pm，_c_ = 963.0 pm 和 _β_ = 93.26°。它的二水合物也是已知的，為單斜晶系，空間群 C2/c (No. 15)，晶格參數 _a_ = 1043 pm，_b_ = 719.5 pm，_c_ = 837.5 pm，_β_ = 113.6°。

在 265 °C 時，溴酸鋇分解成溴化鋇和氧氣。

　
: ${\ce {Ba(BrO3)2 -> BaBr2 + 3O2 ^}}$

## 參考資料
13967-90-3