Describe5 marksChallenge
A student investigated the water potential of potato tissue by cutting identical cylinders and immersing them in sucrose solutions of different concentrations. After 24 hours, the cylinders were removed, blotted dry, and reweighed. The table shows the percentage change in mass for each concentration.
| Sucrose concentration (mol dm⁻³) | Percentage change in mass (%) |
|---|---|
| 0.0 | +12 |
| 0.2 | +6 |
| 0.4 | 0 |
| 0.6 | -4 |
| 0.8 | -8 |
| 1.0 | -12 |
Using these results, describe how the student could estimate the water potential of the potato tissue. Do not use the terms solute potential or pressure potential in your answer.