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磷在氧气中燃烧的现象
更新时间: 2021-05-15 06:52:40  

1、红磷在氧气中剧烈燃烧,发出白光,放出热量,生成大量的白烟。

2、燃烧的文字表达式:红磷+氧气 —点燃→ 五氧化二磷

3、化学方程式:4P+5O2=2P2O5,产生物质:五氧化二磷

4、白磷几乎不溶于水,易溶解于二硫化碳溶剂中.在高压下加热会变为黑磷,其密度2.70g/㎝3,略显金属性;加热升华,但在4300KPa压强下加热至590℃可熔融。汽化后再凝华则得白磷。

关键词: 氧气 燃烧 现象

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