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7 Abnormal Molecular Mass

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

ChemistryThe elevation in boiling point is 40% lower than the expected value. What is the apparent molar mass compared with the true mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12Medium ChemistryIf a solute has i = 0.72 and true molar mass 144 g mol⁻¹, what is its apparent molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10Easy ChemistryAn XY electrolyte has i = 1.72. If its formal concentration is 0.25 M, what is the effective particle concentration?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 9Easy ChemistryTwenty percent of a solute’s particles form dimers and 40% form tetramers. The rest remain single. What is i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16Hard ChemistryIf the apparent molar mass is 60% greater than the true molar mass, what is the approximate value of i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10Easy ChemistryFor a solute with i = 0.70 that forms only trimers, what is the degree of association?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 13Medium ChemistryOut of 100 initial AB2 units, 35 units dissociate. What is the total number of effective particles?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12Medium ChemistryAn MCl₃ salt has i = 2.8. What is its apparent molar mass compared with its true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10Easy ChemistryIf Kb = 0.60 K kg mol−1, m = 0.20 mol kg−1, and the observed boiling-point elevation is 0.18 K, what is i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12Medium ChemistryA 0.04 M solution has osmotic pressure 1.476 atm at 300 K. Taking R = 0.082 L atm mol−1 K−1, what is i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 13Medium ChemistryForty-five percent of a solute A forms A3. What is the value of i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12Medium ChemistryThe lowering of vapour pressure in a solution is 2.4 times the normal value. If the solute is AB2, what is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14Medium ChemistryA colligative experiment gives an apparent molar mass of 300 g mol−1, while the true molar mass is 150 g mol−1. Which conclusion is most appropriate?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10Easy ChemistryA solution has i = 2.05. If the solute is of the A2B type, what is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 12Medium ChemistryA solute forms trimers completely. What is the ratio of apparent molar mass to true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10Easy ChemistryIf a colligative property of an AB3 solution is 120% higher than its normal value, what is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14Medium ChemistryAn MX4 salt is 45% dissociated. What fraction of the true molar mass is its apparent molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 13Medium ChemistryAn acid has a true molar mass of 122 g mol−1, but its apparent molar mass in benzene is 200 g mol−1. If only dimers form, what is the approximate degree of association?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 15Hard ChemistryFor a 0.15 mol kg−1 solution, Kf = 2.0 K kg mol−1 and the observed freezing-point depression is 0.54 K. If the solute dissociates into two ions, what is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14Medium ChemistryA solute has i = 0.8125 and forms only tetramers. What is the degree of association?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 13Medium