Question Bank • QB_DFE_EXP_096 NAT • 2 Marks

Section 7: Dairy and Food Engineering

Preservation of Food

Subtopic: Preservation of food by cooling and freezing

Question Statement:

A sucrose sugar solution has a molality of $m = 2.0\text{ mol/kg}$. If the cryoscopic freezing point depression constant of water is $K_f = 1.86^\circ\text{C}\cdot\text{kg/mol}$, calculate the initial freezing point depression $\Delta T_f$ in $^\circ\text{C}$.

Answer Key:

3.72

Step-by-Step Solution & Explanation

$\Delta T_f = K_f \times m = 1.86 \times 2.0 = 3.72^\circ\text{C}$
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