Question

At what temperature would a 1.35 m NaCl solution freeze, given that the van't Hoff factor for NaCl is 1.9? Kf for water is 1.96 ∘C/m .

Express your answer with the appropriate units.

Step 1

Given:

Molality of NaCl (m) = 1.35 m.

Van't Hoff factor (i) = 1.9.

Depression in freezing point constant K_{f }= 1.96 ℃/m.

Step 2

Depression in freezing point is given by:

Step 3

Calculation for change i...

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