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氨气水氟化氢的熔沸点问题

2025-03-31 15:27:59

推荐回答（2个）

回答1：

水的沸点最高，其次是氟化氢，然后氨气，甲烷最低。原因是范德华力，以及氢键的影响（主要原因），一般情况下相对分子质量越大范德华力越大，熔沸点越高, 而如果存在氢键则含氢键的物质要比不含氢键的物质熔沸点高，而氢键越强熔沸点越高。

回答2：

沸点主要看分子量，HF分子量小所以沸点比水低。
氢键是分子内部作用，分子之间好象不是这样作用的。

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