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asked Jul 2, 2020 in Chemistry by
RashmiKumari (49.1k points) Why the freezing point depression (ΔTf) of 0.4 M NaCl solution is nearly twice than that of 0.4 M glucose solution?
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answered Jul 2, 2020 by
AmanKumar (51.8k points) Best answer This is because Van’t Hoff factor for NaCl is 2 and for glucose, it is 1. ← Prev Question Next Question → Find MCQs & Mock Test
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... Why the freezing point depression at of 0.4 m NaCl solution is nearly twice than that of 0.4 M glucose solution 2017?According to Van't Hoff, Van't Hoff factor for\[NaCl\] is 2 and for glucose, it is 1. Van't Hoff factor is more means freezing point depression is more. So, the freezing point depression (\[\Delta {{T}_{f}}\]) of 0.4 M \[NaCl\] solution is nearly twice that of 0.4 M Glucose solution.
What causes depression in freezing point?The explanation for the freezing point depression is then simply that as solvent molecules leave the liquid and join the solid, they leave behind a smaller volume of liquid in which the solute particles can roam. The resulting reduced entropy of the solute particles thus is independent of their properties.
What is maximum depression in freezing point?The maximum depression of the freezing point is about −18 °C (0 °F), so if the ambient temperature is lower, NaCl will be ineffective.
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