chemistry

A solution of potassium nitrate in water
has a freezing point of -0.082◦C. What is
the concentration of KNO3 in this solution?
Kf = 1.86 ◦C/m for water.

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  1. moles/kgwater=.082/1.86

    massKNO3/(molmass*kgwater)=.082/1.86
    masskno3/kgwater= .082*molmass/1.86= concentration.
    you can change that to percent w/w if you wish.

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    bobpursley

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