Question

a bag made from a semipermeable membrane material and filled with a 5% glucose solution is placed in a beaker with a 2% fructose solution. which of the following statements is correct?
the solution in the beaker is hypertonic to the solution in the bag.
water molecules will diffuse out of the bag.
the bag with the solution will increase its mass.
the bag with the solution will shrink.

Explanation:

1. First, understand tonicity: A hypertonic solution has a higher solute concentration, isotonic equal, hypotonic lower. The bag has 5% glucose, beaker has 2% fructose. Glucose and fructose are different solutes, but we consider total solute concentration. The bag's solute concentration (5%) is higher than the beaker's (2%), so the beaker is hypotonic to the bag, and the bag is hypertonic to the beaker.
2. For osmosis, water moves from hypotonic (lower solute, more water) to hypertonic (higher solute, less water) solution. So water will move into the bag (from beaker to bag) because the bag is hypertonic (higher solute) relative to the beaker.
3. Analyze each option:

• "The solution in the beaker is hypertonic to the solution in the bag." → Incorrect, as beaker has lower solute (2% vs 5% in bag).
• "Water molecules will diffuse out of the bag." → Incorrect, water moves into the bag (beaker is hypotonic, bag is hypertonic, water goes to hypertonic).
• "The bag with the solution will increase its mass." → Correct, because water moves into the bag, so mass (from water) increases.
• "The bag with the solution will shrink." → Incorrect, if water moves in, the bag should expand, not shrink.

Answer:

The bag with the solution will increase its mass.