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Class 12 · Chemistry
→The lowering of vapour pressure is 1.6 times the normal value. If the solute dissociates into two ions, what is the degree of dissociation?
Class 12 · Chemistry
→A colligative experiment gives an apparent molar mass of 240 g mol⁻¹, while the normal molar mass is 120 g mol⁻¹. Which conclusion is most correct?
Class 12 · Chemistry
→A solution has i = 1.9. If the solute is AB₃, what is the degree of dissociation?
Class 12 · Chemistry
→A solute forms pentamers completely. What is the ratio of apparent molar mass to true molar mass?
Class 12 · Chemistry
→A colligative property is 45% higher than its normal value. If the solute is AB₂, what is the degree of dissociation?
Class 12 · Chemistry
→A salt MX₃ is 70% dissociated. What fraction of its true molar mass is its apparent molar mass?
Class 12 · Chemistry
→An acid has an apparent molar mass of 150 g mol⁻¹ in benzene, while its true molar mass is 90 g mol⁻¹. If only dimers form, what is the degree of association?
Class 12 · Chemistry
→For a 0.20 mol kg⁻¹ solution, Kf = 1.5 K kg mol⁻¹ and the observed freezing-point depression is 0.45 K. If the solute dissociates into two ions, what is the degree of dissociation?
Class 12 · Chemistry
→A solute has i = 0.70 and forms only tetramers. What is the approximate degree of association?
Class 12 · Chemistry
→A solute forms 50% dimers and 20% trimers; the remaining particles stay single. From 100 initial particles, how many effective particles are present?
Class 12 · Chemistry
→An electrolyte XY₂ has an apparent molar mass equal to 0.625 times its true molar mass. What is the degree of dissociation?
Class 12 · Chemistry
→The observed osmotic pressure is 0.80 times the normal value. If the solute forms dimers, what is the degree of association?
Class 12 · Chemistry
→An A₂B salt is 65% dissociated. What is the van’t Hoff factor?
Class 12 · Chemistry
→Forty percent of a solute’s particles form trimers. If its normal molar mass is M, what is the apparent molar mass?
Class 12 · Chemistry
→The true molar mass of a solute is 180 g mol−1 and i = 0.6. What is its apparent molar mass?
Class 12 · Chemistry
→If the apparent molar mass of a solute is M/3, what is the value of i and what does it indicate?
Class 12 · Chemistry
→A solute has i = 0.875 and forms only dimers. Out of 200 initial particles, how many particles participate in dimer formation?
Class 12 · Chemistry
→Why is molar mass obtained from a colligative property called abnormal in some cases?
Class 12 · Chemistry
→For an electrolyte, i = 2.0. Which situation is not possible?
Class 12 · Chemistry
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