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Abnormal Molar Mass

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

ChemistryUnder which condition is the observed molar mass of a solute greater than its true molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryIn molar-mass determination using colligative properties, for which type of solute is the observed molar mass generally lower than its true molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryThe observed molar mass of a solute in a solution is higher than its normal molar mass. What is the simplest possible reason?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryThe observed molar mass of a solute in a solution is lower than its normal molar mass. Which statement best explains this observation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryA salt AB is 60% dissociated in solution. If its normal molar mass is 100 g mol⁻¹, what is its observed molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryThe normal molar mass of NaCl is 58.5 g mol⁻¹. If the van’t Hoff factor is 1.8 in solution, what is the approximate observed molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryA solution has an osmotic pressure of 2.46 atm at 300 K and a concentration of 0.1 M. Taking R = 0.082 L atm K⁻¹ mol⁻¹, what is the van’t Hoff factor?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryThe normal molar mass of an organic acid is 120 g mol⁻¹. In benzene, its observed molar mass is 240 g mol⁻¹. Which reason explains this result?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryThe normal molar mass of a solute is 60 g mol⁻¹, but its observed molar mass from colligative properties is 30 g mol⁻¹. What is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryThe molar mass obtained from freezing-point depression is lower than expected. If the solute is an electrolyte, which reason is suitable?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 17Medium ChemistryIf the actual molar mass of a solute is 60 g mol⁻¹ but the experimental value is 120 g mol⁻¹, which conclusion is suitable?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryIf the actual molar mass of a solute is 180 g mol⁻¹ but the experimental value is 90 g mol⁻¹, which process is possible?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Medium ChemistryIf the observed molar mass of a substance is double its normal value, what is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Easy ChemistryIf the observed molar mass of a substance is half of its normal value, what is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Easy ChemistryIf a solute associates to form dimers, why does the molar mass obtained from colligative properties generally increase?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Medium ChemistryIf the van’t Hoff factor is 2 and the normal molar mass is 100 g mol⁻¹, what is the observed molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Easy ChemistryIf an electrolyte gives an observed molar mass lower than its normal molar mass during molar-mass determination, what is the reason?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Medium ChemistryIf the observed molar mass is greater than the normal molar mass, what is the simplest possible reason?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Medium ChemistryIf the normal molar mass is 120 g mol⁻¹ and the observed molar mass is 60 g mol⁻¹, what is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 17Medium ChemistryIf a solute forms complete dimers, the observed molar mass from the colligative method will be how many times the true value?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16Medium