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Investigation into Osmosis.
Member rating: No Rating | Words: | Submitted: Thu Jan 22 2004
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Investigation into Osmosis Aim To find the concentration of salt solution that is the same as the concentration of dissolved substances in potato tissue. At this point osmosis will not occur Prediction From my preliminary work I can determine that the concentration will be between 0 and 1.0m (Molars). In the preliminary work the potatoes gained 7% mass at 0m and lost 16.1% at 1.0m Apparatus Film Canisters Salt Solutions of Concentrations 0m, 0.25m, 0.5M, .075m and 1m 200cm³ measuring cylinder Potato Cork Borer Ruler Scalpel Balance Method 1. Use the measuring cylinder to measure 20cm³ of each solution into film canisters. Label the canisters 2. Use the cork borer to make potato cylinders and cut them into 2 pieces each 2cm in length 3. Record the start measurement in the table of results 4. Put 2 potato pieces into each film canister 5. Leave for 10 minutes 6. Take each potato piece out of the solution and shake it 3 times to remove excess liquid 7. Re-measure each potato piece...
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