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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।

ChemistryIf a solute dissociates into ions in solution, how is the observed molar mass generally obtained compared with the normal molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryIf 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 16EasyChemistryIf the observed molar mass of a solute is twice its true molar mass, what is the value of the van’t Hoff factor i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16MediumChemistryIf the observed molar mass of a solute is half its true molar mass, what is the value of the van’t Hoff factor i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16MediumChemistryIf the true molar mass is 100 g mol⁻¹ and the van’t Hoff factor is i = 0.5, what is the observed molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16EasyChemistryWhat happens to the observed molar mass when association occurs?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16EasyChemistryWhat happens to the observed molar mass when dissociation occurs?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16EasyChemistryWhy can an abnormal molar mass be obtained for a solute in solution?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16EasyChemistryThe observed molar mass of a substance in benzene is found to be twice its normal molar mass. Which conclusion is correct?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 15MediumChemistryIn a solution, the observed molar mass of a solute is half of its normal value. What is its van’t Hoff factor (i)?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16MediumChemistryIf the observed molar mass of a solute is greater than its normal molar mass, what is the most likely reason?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 15HardChemistryA student calculates the molar mass from the depression in freezing point by treating calcium chloride as non-dissociating. What is the main error compared with ideal dissociation?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15HardChemistryDue to dissociation of an electrolyte, how is the observed molar mass generally obtained from a colligative property?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14MediumChemistryIf the observed molar mass of a solute is twice its normal molar mass, what is the van’t Hoff factor and which process is indicated?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14HardChemistryThe experimental molar mass of a solute determined from osmotic pressure is greater than its actual molar mass. What behaviour does this mainly indicate?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14MediumChemistryTwo molecules associate to form one dimer. If the degree of association is 80%, what is the van’t Hoff factor?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14HardChemistryThe normal molar mass of a solute is 120 g mol⁻¹, while its observed molar mass from the osmotic-pressure method is 60 g mol⁻¹. What is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14MediumChemistryIn a solution, 30% of the solute particles form dimers. The observed molar mass will be how many times the true molar mass?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryIn which of the following situations is the observed molar mass of a solute greater than its true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 13HardChemistryIn which situation will the observed molar mass of a solute be higher than its true molar mass?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium