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從固體物質的不飽和溶液裏析出晶體,一般要經過下列步驟:不飽和溶液→飽和溶液→過飽和溶液→晶核的產生→晶體生長等過程.
朋友…這個問題很簡單,不飽和溶液當然不能析出晶體了.樓上說的降溫那是改變了溶液的溶解度,具體點是降低了溶解度,可以析出晶體,還有就是蒸發溶劑,也是把溶液變成了飽和的,所以才析出晶體的!這兩種方法都是外界因素改變的!如果不改變任何條件,本來的溶液不可能析出晶體!
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