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为什么氢氟酸电离后放热
更新时间: 2020-10-09 00:00:00  

氢氟酸在溶于水的时候,先解离成氢离子和氟离子,这个过程需要吸收热量,氢离子和氟离子在水溶液中以水合离子形式存在,水合是放热过程,离子半径极大或极小时,水合热很大,氟离子半径很小,所以溶解时水和热很大,甚至超过了解离时吸收的能量。

关键词: 为什么 氢氟酸 电离 放热

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