按照稀溶液的依数性公式,水溶液沸点升高常数kb=0.512 K·kg·mol^-1
将5%的蔗糖水溶液浓度换算成质量摩尔浓度=(50/180)=0.28摩尔/千克.
水溶液的沸点=100+0.28*0.512=100.14°C
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