生石灰溶解于水会和水反应:CaO+H2O=Ca(OH)2,但是由于Ca(OH)2的溶解度很小,不会超过0.2g,所以质量分数不会大于1%,所以溶液质量分数很小;
故选C.
将5.6克生石灰投入94.4克水中,使之完全溶解,所得溶液中溶质质量分数( ) A.大于5.6% B.等于5.6% C.小于5.6% D.无法确定
将5.6克生石灰投入94.4克水中,使之完全溶解,所得溶液中溶质质量分数( )
A. 大于5.6%
B. 等于5.6%
C. 小于5.6%
D. 无法确定
A. 大于5.6%
B. 等于5.6%
C. 小于5.6%
D. 无法确定
化学人气:295 ℃时间:2020-05-23 13:15:06
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