If the pure water in the left arm of the U-tube is replaced by a solution more concentrated than the one in the right arm, what will happen?
A. Nothing
B. Water flows through the semipermeable membrane from the more dilute solution to the more concentrated solution and the liquid level in the left arm rises.
C. Water flows through the semipermeable membrane from the more concentrated solution to the more dilute solution and the liquid level in the right arm rises.
Answer: B