The solutions in the arms of a U-tube are separated at the bottom of the tube by
ID: 47369 • Letter: T
Question
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. Describe, in one sentence, what you should find if you examine side A after 3 days (in other words, what will the glucose, salt, and water levels be like on side A after 3 days)Explanation / Answer
If we examine side A after 3 days then we will observe a decrease in the concentration of NaCl and a decrease in the water level because NaCl and water move to side B in order to achieve equilibrium. There will be no change in concentration of glucose because the membrane is impermeable to glucose