Place the following aqueous solutions of nonvolatile, nonionic compounds in order of decreasing osmotic pressure. I. 0.011 mol L^-1 sucrose II. 0.00095 mol L^-¹ glucose III. 0.0060 mol L^-1 glycerin A) I III II B) I II III C) II III I D) III I II E) II I III

Question

Place the following aqueous solutions of nonvolatile, nonionic compounds in order of decreasing osmotic pressure. I. 0.011 mol L^-1 sucrose II. 0.00095 mol L^-¹ glucose III. 0.0060 mol L^-1 glycerin A) I > III > II B) I > II > III C) II > III > I D) III > I > II E) II > I > III

Quizplus · Accepted Answer

Osmotic pressure is directly proportional to the concentration of solute particles. Sucrose and glucose both have the same molar concentration, but glucose is a smaller molecule, so it will have a higher osmotic pressure. Glycerin has a lower molar concentration, so it will have a lower osmotic pressure compared to sucrose and glucose. Therefore, the correct order is I > III > II.

Place the Following Aqueous Solutions of Nonvolatile, Nonionic Compounds in Order