Rank the following solutions in order of increasing osmotic pressure: 1.0 m CH₃OH, 1.0 m Ba(NO₃)₂, 2.0 m KCl, 3.0 m C₆H₁₂O₆ A)Ba(NO₃)₂

Question

Rank the following solutions in order of increasing osmotic pressure: 1.0 m CH₃OH, 1.0 m Ba(NO₃)₂, 2.0 m KCl, 3.0 m C₆H₁₂O₆ A)Ba(NO₃)₂ < CH₃OH < KCl = C₆H₁₂O₆ B)C₆H₁₂O₆ = KCl < CH₃OH < Ba(NO₃)₂ C)CH₃OH < Ba(NO₃)₂ = C₆H₁₂O₆ < KCl D)CH₃OH < Ba(NO₃)₂ < C₆H₁₂O₆ < KCl E)KCl < CH₃OH < Ba(NO₃)₂< C₆H₁₂O₆

Quizplus · Accepted Answer

Osmotic pressure is directly proportional to concentration, so the highest concentration solution will have the highest osmotic pressure. In this case, the solution with the highest concentration is 3.0 m C₆H₁₂O₆, followed by 2.0 m KCl, then 1.0 m CH₃OH, and finally 1.0 m Ba(NO₃)₂. Therefore, the order of increasing osmotic pressure is Ba(NO₃)₂ < CH₃OH < C₆H₁₂O₆ < KCl, which is represented in choice C.

Rank the Following Solutions in Order of Increasing Osmotic Pressure