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氯化氫的化学式

返回打印发布时间：2022/7/1 点击：10859

氯化氫的化学式为HCl，氯化氫分子由氯原子和氢原子组成，是一种无色有刺激性的气体。

氯化氫为无色气体，熔点-114.2℃，沸点-85℃，在空气中不燃烧，热稳定，约1500℃不分解。有窒息气味，对上呼吸道有强烈刺激，对眼睛、皮肤、粘膜有腐蚀。密度比空气大，其水溶液为盐酸，浓盐酸具有挥发性。

氯化氫气体溶解在水中生成盐酸，小瓶打开时总是形成空气中的小水滴和盐酸雾。工业盐酸经常微黄色，主要是由于氯化铁的存在。氨水常用于检查盐酸的存在，氨水与氯化氫反应生成白色的氯化铵微粒。

氯化氫有强偶极，与其他偶极发生氢键。实验室采集盐酸的方法：盐酸主要由氯化氫溶于水制备。氯化氫有很多制造方法，所以有很多前体。另外，也可以通过氯气和二氧化硫在水溶液中作用，制备SO2+Cl2+2H2O=2HCl+H2SO4。

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