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Abnormal Molecular Mass

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

ChemistryA solute has i = 2.25. If it is of the AB3 type, what is the ratio of apparent molar mass to true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 11EasyChemistryIf the apparent molar mass of a solute is 2.5 times its true molar mass, what is the van’t Hoff factor and what does it indicate?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryIn a 0.30 m solution, Kb = 0.50 K kg mol⁻¹ and the observed boiling-point elevation is 0.225 K. If the solute dissociates into two ions, what is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 13MediumChemistryAn unknown solute has i = 4. Which cause is most suitable?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10EasyChemistryA solute does not dimerise completely but gives i = 0.58. What is the degree of dimer association?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryFor an AB electrolyte, 100 initial units produce 160 effective particles. What is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryThe apparent molar mass is 72 g mol⁻¹. If i = 1.5, what is the true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 11EasyChemistryAssume 20% dissociation of Al₂(SO₄)₃. Complete dissociation produces five ions. What is i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryThe normal boiling-point elevation is 0.24 K. What is the observed elevation if 60% dimer association occurs?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryIf the van’t Hoff factor of MgCl₂ is 2.8, what is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryA solute has 25% of its particles forming dimers and 30% forming tetramers; the rest remain single. What is i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14MediumChemistryA solution has i = 1.75. Which statement is definitely correct?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10EasyChemistryFor a solute, i = 4/3. If it dissociates into two ions, what is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 11EasyChemistryFor a 0.10 m solution, the normal freezing-point depression is 0.186 K and the observed depression is 0.372 K. Which conclusion is correct?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 11EasyChemistryThe elevation in boiling point is 25% lower than expected. If the cause is dimer association, what is the apparent molar mass relative to the true mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 11EasyChemistryAn AB₄ electrolyte is 30% dissociated. What is the value of i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryA colligative property is 0.40 times the normal value. If the solute forms only trimers, what is the degree of association?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryFor Na₂SO₄, i = 2.2. What is the approximate degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12MediumChemistryA solute has i = 0.55 and a true molar mass of 110 g mol⁻¹. What is its apparent molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 11EasyChemistryA solution has i = 2.5. Which situation matches this value?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12Medium