In each set up the dialysis tubing contains a solution of 30% glucose and safranin. However, the set ups differ in the contents of the beaker. The control set up has the same solution in the beaker while in the experimental set up it contains just water. In both the level of fluid in the pipette is drawn half way up the pipette so that any change of volume of the dialysis tubing can be accurately measured. The dialysis tubing is permeable to water, glucose and the dye.

1. What is the relative osmotic concentration of the contents of the dialysis tubing with respect to the distilled water? (isotonic, hypotonic, hypertonic)

2. in which direction will osmosis occur? why?

thanks!

Hypertonic

upward

Wrong ans. Idk

1. The relative osmotic concentration of the contents of the dialysis tubing with respect to distilled water can be determined by comparing the solute concentration. In this case, the dialysis tubing contains a solution of 30% glucose and safranin, while the beaker in the control setup contains the same solution. Since the solute concentration is the same in both the tubing and the beaker, the relative osmotic concentration is isotonic.

2. Osmosis will occur in the direction of equalizing the solute concentration. Since the dialysis tubing is permeable to water, glucose, and the dye, water molecules will move across the semi-permeable membrane from an area of lower solute concentration (in this case, distilled water) to an area of higher solute concentration (inside the dialysis tubing). This is because water will naturally move towards areas of higher solute concentration in order to achieve equilibrium. Therefore, osmosis will occur from the beaker (containing distilled water) into the dialysis tubing.

To determine the relative osmotic concentration and the direction of osmosis, we need to understand the concept of osmosis and the characteristics of the solutions involved in the experiment.

1. Relative Osmotic Concentration:
To determine whether the contents of the dialysis tubing are isotonic, hypotonic, or hypertonic compared to distilled water, we compare the solute concentrations. In this case, the tubing contains a 30% glucose and safranin solution, and the beaker in the control setup contains the same solution.

To decide the relative osmotic concentration:
- If the concentration of solutes inside the tubing is the same as the concentration outside (in distilled water), it is isotonic.
- If the concentration of solutes inside the tubing is higher than the concentration outside, it is hypertonic.
- If the concentration of solutes inside the tubing is lower than the concentration outside, it is hypotonic.

Since the dialysis tubing contains a 30% glucose and safranin solution, and the beaker contains distilled water, the relative osmotic concentration of the tubing is hypertonic (higher concentration) compared to the distilled water.

2. Direction of Osmosis:
Osmosis is the movement of solvent molecules (in this case, water) from an area of lower solute concentration to an area of higher solute concentration through a semipermeable membrane, in an attempt to equalize the solute concentrations on both sides.

In this experiment, the dialysis tubing is permeable to water, glucose, and safranin. Since the concentration of solutes (glucose and safranin) is higher in the tubing than in the beaker (with distilled water), osmosis will occur from the beaker into the dialysis tubing. Water molecules will move into the tubing, attempting to dilute the higher solute concentration inside.

Therefore, osmosis will occur from the distilled water in the beaker into the dialysis tubing, towards the higher solute concentration, in an attempt to equalize the solute concentrations on both sides.

I hope this explanation helps! Let me know if there's anything else I can assist you with.