Question

If a dialysis bag containing a 20% solution sucrose solution is placed in a beaker also containing a 20% sucrose solution, the net flow of water would be:

a. into the bag
b. into the beaker
c. zero
d. out of the bag

Answer 1

When a dialysis bag containing a 20% sucrose solution is placed in a beaker with a 20% sucrose solution, there is no net flow of water because the solution is isotonic and there is no concentration gradient to drive the movement of water.

Step-by-step explanation:

If a dialysis bag containing a 20% sucrose solution is placed in a beaker also containing a 20% sucrose solution, the net flow of water would be zero (c). This is because the concentration of sucrose is the same in both the dialysis bag and the beaker, making the solution isotonic. In isotonic conditions, there is no net movement of water since the concentration gradient that facilitates osmosis is absent. The water molecules move at equal rates in both directions across the semi-permeable membrane, maintaining equilibrium.