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Freezing Point Depression

Class 12 Chemistry के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ChemistryWhich statement is correct about the depression of the freezing point of a solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIf the number of effective solute particles doubles while molality and solvent remain the same, what happens to the freezing-point depression?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryIf the freezing-point depression of a solution is 2.5 times the expected value for a non-dissociated solute, what is the value of the van’t Hoff factor i?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryWhich of the following equimolal solutions will have the highest freezing point, assuming ideal behaviour?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryAmong aqueous solutions of equal molality, assuming complete ionisation, which solute will produce the greatest depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryAmong aqueous solutions of equal molality, assuming complete ionisation, which solute solution will show the greatest depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryFor a solution, the experimentally observed depression in freezing point is less than the ideally calculated value, and the van’t Hoff factor is i < 1. Which phenomenon does this indicate?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf Kf and molality are known, how is the depression in freezing point found for a non-dissociating solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryIf a 0.2 molal non-dissociating solute produces a certain depression in freezing point, what will be the ideal depression in freezing point for a 0.2 molal NaCl solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhy does ice appear to melt faster when salt is sprinkled on it?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryWhy is the freezing point of seawater lower than that of pure water?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryIf the freezing-point depression of a solution is less than the value expected for a non-associated solute, which reason is most probable?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhich pair contains only colligative properties?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryWhy is the freezing point of a solution lower than that of the pure solvent?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryIf equal masses of different solutes are dissolved in equal masses of water, which solute will cause the greater freezing-point depression?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhat is the correct meaning of the constant Kf used in freezing-point depression?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryBetween 0.1 molal glucose solution and 0.1 molal calcium chloride solution, which will have the lower freezing point, assuming ideal dissociation?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf a solute causes a larger depression in freezing point, what is the most suitable reason?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryIf the ideal ΔT_f for a 0.1 m solution is 0.186 K, but the actual ΔT_f is 0.279 K, what is the van't Hoff factor (i)?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryWhen 10 g of a non-electrolyte solute is dissolved in 500 g of water, the depression in freezing point is ΔT_f = 0.186 K. Taking K_f = 1.86 K kg mol⁻¹, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 13Medium