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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 association of a solute makes the observed elevation in boiling point equal to 0.75 of the expected value and the solute forms dimers, what is the degree of association?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryA solution has a freezing-point depression 1.5 times the expected value for a non-dissociated solute. If the solute dissociates into two ions, what is the degree of dissociation?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryIf a 0.01 M non-dissociating solute has an osmotic pressure of 0.246 atm at 300 K, what will be the osmotic pressure of a 0.02 M solution of the same solute at the same temperature?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryWhich method remains comparatively easier to measure even at very low concentration while determining molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryWhich colligative property is most suitable for determining the molar mass of a polymer in a dilute solution?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryEqual masses of two non-dissociating solutes are dissolved separately in equal masses of the same solvent. If both solutions show the same depression in freezing point (ΔTf), what can be concluded about their molar masses?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17HardChemistryWhen 2.0 g of solute is dissolved in 50 g of solvent, ΔTb = 0.40 K. If Kb = 0.80 K kg mol⁻¹, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryWhich of the following colligative properties is most suitable for determining the molar mass of a high-molar-mass solute such as a polymer?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryA solute has a normal molar mass of 100 g mol⁻¹ and an observed molar mass of 125 g mol⁻¹. What is the value of i?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryIf the observed molar mass of a solute is greater than its actual molar mass, which phenomenon does this generally indicate?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryWhich colligative property is considered most suitable for determining the molar mass of high-molar-mass substances such as proteins?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryWhich colligative property is most suitable for determining the molar mass of proteins having very high molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryIf a \(0.1\,\mathrm{mol\,kg^{-1}}\) solution has a boiling-point elevation of \(0.104\,\mathrm{K}\), and \(K_b=0.52\,\mathrm{K\,kg\,mol^{-1}}\), what is the van't Hoff factor \(i\)?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryWhich property is required to determine the molar mass of a solute by the freezing-point-depression method?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryWhen \(1.2\,\mathrm{g}\) of a substance is dissolved in \(60\,\mathrm{g}\) of solvent, \(\Delta T_f=0.40\,\mathrm{K}\). If \(K_f=2.0\,\mathrm{K\,kg\,mol^{-1}}\), what is the molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryWhile determining the molar mass of an unknown solute by the osmotic-pressure method, which type of solution is most suitable?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryWhen \(2\,\mathrm{g}\) of a non-dissociating solute is dissolved in \(100\,\mathrm{g}\) of solvent, \(\Delta T_b=0.52\,\mathrm{K}\). If \(K_b=0.52\,\mathrm{K\,kg\,mol^{-1}}\), what is the molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryIf the solvent mass in a freezing-point-depression experiment is incorrectly recorded as \(120\,\mathrm{g}\) instead of \(100\,\mathrm{g}\), while all other values are correct, how will the calculated molar mass compare with the actual value?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17HardChemistryIf \(K_b\) is correct but \(\Delta T_b\) is measured 20% higher than its actual value during molar-mass determination, how will the calculated molar mass compare with the actual molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17HardChemistryA solute has observed molar mass \(80\,\mathrm{g\,mol^{-1}}\) and van't Hoff factor \(1.5\). What is its normal molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Hard