Question

"Which statement best describes what would most likely be observed after 20 minutes?

(1)The contents of the dialysis tube would turn blue-black.
(2)The liquid in the beaker would turn blue-black.
(3)The dialysis tube would burst.
(4)There would be no change visible."

Answer 1

Option A, The contents of the dialysis tube would turn blue-black.

Step-by-step explanation:

A dialysis tube placed in a beaker consisting of solution of water and starch. Here exchange of material will take place through membrane of dialysis tube.

The dialysis has low concentration of starch while the solution in which it is placed has a high concentration of starch. Thus, starch will start moving from the solution into the dialysis tube thereby converting it into blue-black color.

Thus, option A is correct

Answer 2

I think the correct answer from the choices listed above is option 1. The statement that describes the observation after 20 minutes would be that the contents of the dialysis tube would turn blue-black. this is because the starch would diffuse from the solution in the beaker to the water inside the dialysis tube to attain equilibrium.