Search questions
Use text search or combine filters to find exactly the questions you need.
Class 12 · Chemistry
→In a solution, 30% of the solute molecules form dimers. What is the value of i?
Class 12 · Chemistry
→A student finds that the apparent molar mass of a salt is less than its true molar mass. Which conclusion can safely be drawn?
Class 12 · Chemistry
→A solute forms tetramers. If the degree of association is 50%, what is the value of i?
Class 12 · Chemistry
→A solute has i = 3.4 and is an electrolyte of type XY₄. What is its degree of dissociation?
Class 12 · Chemistry
→The relative lowering of vapour pressure of a non-volatile solute is lower than expected. Which conclusion is most correct?
Class 12 · Chemistry
→An AB₂ salt has i = 2.2. What is its degree of dissociation?
Class 12 · Chemistry
→The apparent molar mass of a solute is 0.40 times its true molar mass. If it dissociates into three ions, what is the degree of dissociation?
Class 12 · Chemistry
→If K_b = 0.52 K kg mol⁻¹, m = 0.50 mol kg⁻¹, and observed ΔT_b = 0.39 K, what is i?
Class 12 · Chemistry
→A 0.01 M solution has an osmotic pressure of 0.369 atm at 27°C. Taking R = 0.082 L atm mol⁻¹ K⁻¹, what is the approximate value of i?
Class 12 · Chemistry
→For a solute, elevation in boiling point is lower than the normal expected value. What is the most likely reason?
Class 12 · Chemistry
→For a solution with K_f = 2.0 K kg mol⁻¹, molality 0.20 mol kg⁻¹, and observed ΔT_f = 0.60 K, what is i?
Class 12 · Chemistry
→A solute has i = 0.40 and forms only trimers. What is the approximate degree of association?
Class 12 · Chemistry
→A solute forms trimers and 60% of its molecules become associated. What is the van’t Hoff factor?
Class 12 · Chemistry
→If the osmotic pressure of a solution is 1.8 times the normally expected value, what is its van’t Hoff factor?
Class 12 · Chemistry
→Two solutions have the same molality. In the first, the solute completely dimerises; in the second, it completely dissociates into two ions. What is the ratio of their freezing-point depressions?
Class 12 · Chemistry
→A weak electrolyte XY has i = 1.25 and gives two ions. What is its degree of dissociation?
Class 12 · Chemistry
→A solute has i = 0.75. If it only forms dimers, what is the degree of association?
Class 12 · Chemistry
→AB₃ undergoes 40% dissociation into A³⁺ and three B⁻ ions. What fraction of the true molar mass is the apparent molar mass?
Class 12 · Chemistry
→The apparent molar mass of a solute is double its true molar mass. What is the most suitable explanation?
Class 12 · Chemistry
→