試題詳解

50. A 100.0 mL sample of an aqueous solution at 27°C contains 15.2 mg of an unknown nonelectrolyte compound. If the solution has an osmotic pressure of 7.60 torr, which one is the unknown compound?
(A) C₈H₁₈N₂O₂
(B) C₆H₁₂O₆
(C) C₁₂H₂₂O₁₁
(D) C₂₀H₂₂O₇
(E) C₂₁H₂₀O₁₁