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Molar Mass Determination

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

ChemistryWhich relation is useful for finding the molar mass of a solute by the osmotic-pressure method for a dilute solution?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17MediumChemistryWhich colligative property is generally most convenient for determining the molar mass of large molecules?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryWhat is one of the most common mistakes in molar mass determination using colligative properties?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIf CaCl₂ completely dissociates into ions, what is the ideal value of the van’t Hoff factor (i)?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIf NaCl completely dissociates into Na+ and Cl− ions, what is the ideal value of the van’t Hoff factor i?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryWhen is it necessary to use the van’t Hoff factor i in molar-mass determination?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16EasyChemistryWhich pair of quantities is sufficient to calculate the molar mass of an unknown solute directly?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIn a very dilute solution with a very small solute mole fraction, why can molar mass still be determined?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16MediumChemistryIn molar-mass determination by relative lowering of vapour pressure, which measured quantity is directly related to the mole fraction of a non-volatile solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIf 20 g of a solute corresponds to 0.2 mol, what is its molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIf a 0.2 m solution is prepared using 1 kg of solvent, how many moles of solute are present?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIn which method is it most important to express the mass of the solvent in kilograms?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIn which method is it most directly necessary to express the solution volume in litres?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIf π = 0.246 atm, R = 0.082 L atm mol⁻¹ K⁻¹, and T = 300 K, what is the molarity of a non-dissociated solution?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIf the temperature is 27 °C, what is its approximate value in kelvins?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIn the osmotic-pressure method, on which temperature scale should temperature be expressed?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryWhy is a non-volatile solute used in molar mass determination by vapour-pressure methods?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryIf 8 g of a solute corresponds to 0.10 mol, what is its molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryAfter finding molarity in the osmotic-pressure method, how are the moles of solute calculated?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16MediumChemistryIn the freezing-point depression method, if the mass of solvent is 100 g, what is its mass in kilograms?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Easy

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