Compare7 marksChallenge
A student set up four Visking tubing bags, each containing 10 cm³ of a sucrose solution at a different concentration. Each bag was placed in a separate beaker of distilled water for 30 minutes. The initial and final masses of each bag were recorded. The table shows the percentage change in mass for each bag.
| Bag | Sucrose concentration / mol dm⁻³ | Percentage change in mass |
|---|---|---|
| A | 0.0 | +0.2 |
| B | 0.2 | +3.5 |
| C | 0.4 | +7.1 |
| D | 0.6 | +10.8 |
Compare the movement of water into each bag in terms of water potential and explain why the percentage change in mass differs between the bags.