The Solutions in the Arms of a U-Tube Are Separated

question 9

Multiple Choice

The solutions in the arms of a U-tube are separated at the bottom of the tube by a selectively permeable membrane. The membrane is permeable to sodium chloride but not to glucose. Side A is filled with a solution of 0.4 M glucose and 0.5 M sodium chloride (NaCl) , and side B is filled with a solution containing 0.8 M glucose and 0.4 M sodium chloride. Initially, the volume in both arms is the same.

In the U-tube experiment illustrated above, which of the following statements correctly describes side B at equilibrium?

• A) The concentration of NaCl and glucose will decrease, and the water level will increase.
• B) The concentration of NaCl will increase, the concentration of glucose will decrease, and the water level will increase.
• C) The concentration of NaCl will increase, the concentration of glucose will decrease, and the water level will decrease.
• D) The concentration of NaCl and glucose will increase, and the water level will decrease.

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