question_answer 82)

  Relative lowering of vapour pressure is a colligative property because (a) it depends on the concentration of a non-electrolyte solute in solution and does not depend on the nature of the solute molecules (b) it depends on number of particles of electrolyte solute in solution and does not depend on the nature of the solute particles (c) it depends on the concentration of a non-electrolyte solute in solution as well as on the nature of the solute molecules (d) it depends on the concentration of an electrolyte or non-electrolyte solute in solution as well as on the nature of solute molecules

Answer:

                  (a, b)        Relative lowering of vapour pressure is a colligative property because (i) It does not depend upon nature of solute. (ii) It depends upon number of solute particles. (iii) It depends upon concentration of non-electrolyte solution. Hence, (a) and (b) are correct.