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Class 12 · Chemistry
→In a solution, CaCl₂ is 70% dissociated. What is i?
Class 12 · Chemistry
→If a substance has i = 0.75 and undergoes only dimerisation, what is the degree of dimerisation?
Class 12 · Chemistry
→Which pair is correctly matched?
Class 12 · Chemistry
→A student writes i = Mobs/Mtrue instead of the correct relation. What kind of mistake can this cause?
Class 12 · Chemistry
→For an AB₂ electrolyte, the observed molar mass is half its true molar mass. What is the degree of dissociation?
Class 12 · Chemistry
→If a solute undergoes 50% dimerisation, how many times the true molar mass will be observed?
Class 12 · Chemistry
→A substance X dissociates in water according to X → 2Y + Z, and 40% of X dissociates. What is the van’t Hoff factor i?
Class 12 · Chemistry
→Which statement correctly relates abnormal molar mass to colligative properties?
Class 12 · Chemistry
→If the relative lowering of vapour pressure is half the expected value for a normal solute, what is i approximately?
Class 12 · Chemistry
→For a 1:1 electrolyte, the observed molar mass is 0.8 times the true molar mass. What is the degree of dissociation?
Class 12 · Chemistry
→If i = 1.9 is obtained experimentally for a substance behaving like NaCl, producing two ions, what is the best conclusion?
Class 12 · Chemistry
→A solute is 75% dimerised. What is the value of i?
Class 12 · Chemistry
→In which situation is the molar mass calculated from relative lowering of vapour pressure most likely to be lower than the true value?
Class 12 · Chemistry
→If 0.01 mol of an electrolyte gives 0.024 mol of effective particles in water, what is i?
Class 12 · Chemistry
→Among solutions of equal molality, which gives the maximum depression in freezing point if dissociation is complete?
Class 12 · Chemistry
→For an AB₃ salt, i = 2.5 is observed. What is the degree of dissociation?
Class 12 · Chemistry
→If M_obs > M_true for a solute, which statement about i is correct?
Class 12 · Chemistry
→A salt A₂B is 25% dissociated. Find the value of i.
Class 12 · Chemistry
→An acid dimerises in benzene due to hydrogen bonding. Which statement gives the correct effect?
Class 12 · Chemistry
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