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At what temperature would a 1.75m NaCl solution freeze, given that the van't Hoff factor for NaCl is 1.9? Kf for water is 1.86 C/m.

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delta T = Kf*i*m
You know Kf, i, and m. Calculate delta T and subtract from the normal freezing point of water which is zero degrees C.

-6.18 Celcius

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