Solution 1 has two solutes (A and B) and an osmotic pressure of 250 mOsm. Solution 2 has only one solute (C) and an osmotic pressure of 300 mOsm. If a membrane between these solutions is permeable to only water and B, then

Question

Quizplus · Accepted Answer

Since the membrane is permeable only to water and B, solute A will be retained in solution 1, and solute C will be retained in solution 2. As a result, water will move from solution 2 to solution 1 in an attempt to balance the solute concentrations. This means that solution 2 will lose water, and solution 1 will gain water. Therefore, option B is correct. Option A is incorrect because solution 1 has a lower osmotic pressure than solution 2, so water would not move from a lower-osmotic-pressure solution to a higher one. Option C is incorrect because solute C cannot cross the membrane, and therefore cannot move into solution 1. Option D is incorrect because solution 2 has a higher osmotic pressure. Option E is partly correct, but the second part of the statement is incorrect; solution 1 has a lower osmotic pressure.

Solution 1 Has Two Solutes (A and B) and an Osmotic