What is the freezing point of this sample of seawater?

C

cra.ck_patch

New member
Analysis of 1.0kg of seawater with a density of 1.032g/mL shows the following concentrations: 1.898 w% Cl-, 1.056w% Na+, 0.265 w% SO4^-2, 0.127 w% Mg^+2, 400. ppm Ca^+2, 380. ppm K+, 142 ppm HCO3-, and 65 ppm Br- ( 1ppm= 1 mg of solute/ 1 kg solution)
 
Anything dissolved in solution will lower the freezing point. Considering that it is only a 1-2% solution I would imagine that the fp would only go down by a degree or less. A 10% salt solution will drop the freezing point 12 degrees F.
 
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