High School

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Containers A and B are separated by a selectively permeable membrane. The containers are filled with two different concentrations of saline solutions. The membrane is permeable to both.

a) true
b) false

Answer :

Final answer:

The selectively permeable membrane between containers A and B allows water to move between them, affirming that osmosis will occur until the concentration is balanced, hence the statement is true.

Explanation:

Osmosis is the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration until the solute concentrations on both sides of the membrane are equalized.

In the example provided, container A has a lower concentration of saline (25.0 g NaCl) compared to container B (35.0 g NaCl). According to osmosis:
Container B has a higher concentration of saline.

  1. Water molecules will flow from container A to container B.
  2. The volume of container B will increase as it gains water.

The statement that the membrane is permeable to both solutions is true, as the membrane allows the passage of water to balance the concentration gradient created by the different saline solutions.

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