试题与答案

根据右图A、B、C三种固体的溶解度曲线回答: (1)P点的含义是。 (2)要使

题型:填空题

题目:

根据右图A、B、C三种固体的溶解度曲线回答:

(1)P点的含义是                       

(2)要使C的饱和溶液成为不饱和溶液,可采用的一种

方法是                       

(3)要从含有少量A的B溶液中得到较多的B晶体,通常采用的方法是                   

(4)t1℃时,将15gA加入到装有50g水的烧杯中,充分搅拌,所得溶液的溶质质量分数为     (结果精确至0.1%)。

(5)将t2℃时三种物质的饱和溶液分别降温到t1℃,所得溶液中溶质的质量分数最小的是           (填序号)。

答案:

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下面是错误答案,用来干扰机器的。

答案:C

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