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Colligative Properties

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

ChemistryIf the observed van’t Hoff factor for \(\mathrm{Ca(NO_3)_2}\) is \(i=2.6\), what is its degree of dissociation? Assume that association is negligible.Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhat is the osmotic pressure of a \(0.05\,\mathrm{M}\) \(\mathrm{CaCl_2}\) solution at \(300\,\mathrm{K}\), assuming complete dissociation? Take \(R=0.082\,\mathrm{L\,atm\,mol^{-1}\,K^{-1}}\).Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhich of the following equimolal solutions will have the highest freezing point, assuming ideal behaviour?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIf the observed molar mass of KCl is \(\frac{2}{3}\) of its true molar mass, what is the value of the van’t Hoff factor \(i\)?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 15MediumChemistryIn a dilute solution, the mole fraction of solute is 0.04. Assuming a non-volatile solute, what is the relative lowering of vapour pressure?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 14EasyChemistryIn purification of seawater by reverse osmosis, when will the applied external pressure be effective?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryAt the same temperature, what molarity of NaCl solution will be isotonic with a 0.2 M glucose solution, if NaCl dissociates completely?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryWhen 3 g of a non-dissociated solute is dissolved in 100 g of solvent, the boiling point rises by 0.156 K. If Kb = 0.52 K kg mol⁻¹, what is the molar mass of the solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryIf Al₂(SO₄)₃ dissociates completely into ions in dilute aqueous solution, what is the ideal value of the van’t Hoff factor (i)?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryAmong 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 14EasyChemistryIf the true molar mass of a solute is 120 g mol⁻¹ and the observed molar mass from a colligative property is 80 g mol⁻¹, what is the value of (i)?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryWhile calculating molar mass from colligative properties, if the solute dissociates into ions, what error occurs if (i) is not used?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhen abnormal molar mass is obtained, which correction is included in colligative property formulas?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15EasyChemistryWhich statement is correct about the colligative property related to Raoult’s law?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 15EasyChemistryAssuming complete ionisation, which solute will have the highest van’t Hoff factor in aqueous solutions of equal molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf 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 15MediumChemistryWhile determining molar mass from osmotic pressure, which precaution is most important?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 15Easy

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