Imagine a beaker with solutions separated by a plasma membrane (like what is sho

Question

Imagine a beaker with solutions separated by a plasma membrane (like what is shown in the figure, step 3). Predict what will happen after addition of a new solute to the solution on the left side if the new solute (1) crosses the membrane readily or (2) is incapable of crossing the membrane.
A. (1) New solute will diffuse from left to right to establish equilibrium; (2) water level on the right will not change.
B. (1) New solute will diffuse from left to right to establish equilibrium; (2) water level on the right will rise.
C. (1) New solute will diffuse from left to right to establish equilibrium; (2) water level on the right will fall.
D. (1) New solute will diffuse from right to left to establish equilibrium; (2) water level on the right will fall.

Explanation / Answer

C.

(1) The new solute will diffuse from left to right to establish equilibrium. (2) The water level on the right will fall.

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