PRACTICAL: Osmosis

1) Prepare a range of sucrose (sugar) solutions - could be sodium chloride (salt). Measured in 'mol dm-3'. E.g. 0.2 mol dm-3 to 1.0 mol dm-3. 2) Set up a series of boiling tubes with each of these solutions. 1 will contain distilled water (0.0 mol dm-3 of sucrose) - it'll act as the control in the experiment. Make sure each tubes concentration is labelled 3) Prepare blank results table. Make sure potatoes mass' are not mixed up when recording them. Each cylinder will have a different mass before and after investigation 4) For each sucrose concentration, repeat the investigation for several potato cylinders - makes experiment repeatable as not all potatoes behave in the same way, also means anomalies can be identified and ignored when calculating mean