Search questions
Choose which content to search, then combine terms with AND or OR.
Class 12 · Chemistry · Hard
→Forty percent of a solute’s particles form dimers and 30% form trimers. The rest remain single. What is i?
Class 12 · Chemistry · Medium
→An AX3 electrolyte has an apparent molar mass equal to 0.40 times its true molar mass. What is the degree of dissociation?
Class 12 · Chemistry · Medium
→The osmotic pressure of a solution is 0.65 times the normal value. If the solute forms only dimers, what is the degree of association?
Class 12 · Chemistry · Easy
→An AB2 salt undergoes 55% dissociation. What is its van’t Hoff factor?
Class 12 · Chemistry · Medium
→Thirty percent of a solute’s particles form tetramers. If the true molar mass is M, what is the approximate apparent molar mass?
Class 12 · Chemistry · Medium
→A student assumes i = 1 for CaCl2, although the actual i is 2.5. How will the apparent molar mass compare with the true molar mass?
Class 12 · Chemistry · Easy
→A 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 12 · Chemistry · Medium
→A solution should normally have an osmotic pressure of 1.20 atm, but its actual osmotic pressure is 0.90 atm. If the solute forms dimers, what is the degree of association?
Class 12 · Chemistry · Easy
→For a solute with i = 1.2, if it dissociates into three ions, what is the degree of dissociation?
Class 12 · Chemistry · Medium
→A solute undergoes 80% tetramer association. If the normal freezing-point depression is 0.50 K, what is the observed depression?
Class 12 · Chemistry · Medium
→The true molar mass of an AB2 salt is 120 g mol−1. If 40% dissociation occurs, what is its apparent molar mass?
Class 12 · Chemistry · Medium
→If 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 12 · Chemistry · Medium
→An AX₂ salt is 45% dissociated. From 200 initial formula units, how many effective particles will be present?
Class 12 · Chemistry · Easy
→A solution has i = 0.90. Which explanation is most appropriate?
Class 12 · Chemistry · Medium
→In 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 12 · Chemistry · Easy
→An unknown solute has i = 4. Which cause is most suitable?
Class 12 · Chemistry · Medium
→A solute does not dimerise completely but gives i = 0.58. What is the degree of dimer association?
Class 12 · Chemistry · Medium
→For an AB electrolyte, 100 initial units produce 160 effective particles. What is the degree of dissociation?
Class 12 · Chemistry · Easy
→The apparent molar mass is 72 g mol⁻¹. If i = 1.5, what is the true molar mass?
Class 12 · Chemistry · Medium
→