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熱門關鍵詞： 工业级氯化氫 化学级氯化氫 高纯级氯化氫 电子级氯化氫 硫化氫氣體 高純氯氣 配套設備

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氯化氫调节溶液的酸碱度

返回打印发布时间：2013/5/24 点击：10292

    一定要了解氯化氫的基本用途，以及它的物理特性，以免出现安全性问题。
    氯化氫的用途　　
    1.配制标准溶液滴定碱性物质。
    2.调节溶液的酸碱度。
    3.水解淀粉和蛋白质等。
    4.制备胶、药品和染料。
    5.有机合成催化剂、溶剂、腐蚀剂。
    6.氯化氫气体的用途主要为制染料、香料、药物、各种氯化物及腐蚀抑制剂
    7. 用于制盐酸、氯化物，并用作有机化学的缩合剂等。
    氯化氫的制备及提取方法　　
    制备：1.由氢气和氯气直接化合。2.由食盐与浓硫酸共热而得。3.亦可由有机化学工业氯化过程副产获得。
    提取方法：
    实验室制取氯化氫一般是用食盐和浓硫酸起反应，不加热或稍微加热，生成硫酸氢钠和氯化氫。
    NaCl+H2SO4→NaHSO4+HCl↑
    在500℃到600℃的条件下，继续起反应而生成氯化氫和硫酸钠。
    NaHSO4+NaCl→Na2SO4+HCl↑
    总的化学方程式可以表示如下：
    2NaCl+H2SO4→Na2SO4+2HCl↑
    氯化氫的水溶液为盐酸(HCl)。
    掌握了氯化氫的通途与提取方法，才能有效的利用氯化氫。

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