某温度下,100 g饱和氯化钠溶液中含有氯化钠26.5 g,若向此溶液中添

某温度下,100 g饱和氯化钠溶液中含有氯化钠26.5 g,若向此溶液中添加3.5 g氯化钠和6.5 g水,则所得溶液的溶质质量分数是(    )

A.30%                                  B.(26.5+3.5)/(100+6.5)

C.26.5%                               D.(26.5+3.5)/(100+6.5+3.5)

答案

解析:加的NaCl和H2O的比例过饱和,所以溶液的浓度为饱和溶液的浓度。

答案:C

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