Compare5 marksStandard
A student filled four lengths of Visking tubing with 10 cm³ of distilled water and sealed them. Each tubing was placed in a beaker containing 200 cm³ of a sucrose solution of a different concentration. After 30 minutes, the tubing was removed, dried, and weighed. The percentage change in mass was calculated. The results are shown in the table.
| Concentration of sucrose solution outside tubing (mol dm⁻³) | Percentage change in mass |
|---|---|
| 0.0 | 0.0 |
| 0.2 | -2.5 |
| 0.5 | -6.0 |
| 1.0 | -12.0 |
Compare the movement of water into and out of the Visking tubing for the four sucrose concentrations, using the concept of water potential.