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氢氧化钠加水为什么会放热
更新时间: 2020-09-15 00:00:00  

化合物溶于水的过程,有化学过程也有物理过程,象氢氧化钠固体溶解于水有一个分散过程,即物理过程,这时吸热;溶解水后形成水合离子这个过程是化学过程,这时放热。当放出的热量大于吸收的热量时,溶解就表现放热;当放出的热量小于吸收的热量时,溶解就表现吸热。

关键词: 氢氧化钠 为什么 放热

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