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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.

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.
check_circleAnswer
Step 1

Given:

Molality of NaCl (m) = 1.35 m.

Van't Hoff factor (i) = 1.9.

Depression in freezing point constant Kf = 1.96 ℃/m.

Step 2

Depression in freezing point is given by:

ДTf %3D
Kf X i x m
ΔΤ
.
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ДTf %3D Kf X i x m ΔΤ .

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Step 3

Calculation for change i...

ДТ 3 KfXix m.
Т — Те 3D 1.96°C/m x 1.9 х 1.35 m
Т - T3D 5.03 °C
0 °С — Tе 3D 5.03°C
Tr 0 °C 5.03°C
Tf 3D —5.03 °С
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ДТ 3 KfXix m. Т — Те 3D 1.96°C/m x 1.9 х 1.35 m Т - T3D 5.03 °C 0 °С — Tе 3D 5.03°C Tr 0 °C 5.03°C Tf 3D —5.03 °С

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