Coursework - Osmosis

Coursework - Osmosis Planning Aim: To investigate what concentration of saccharose solution is isotonic to tater cellphone sap. Apparatus:0M saccharose (aq) (distilled water) 2M sucrose (aq) Potato Chip cutter Knife Boiling tubes Measuring piston chamber (25cm3) Vernier callipers (to nighest 0.1mm) Balance (to nearby 0.01gram) Safety: I exit look into safety around the test ground by: article of clothing safety goggles, laying report towels, removing baggage from walkinging space, repel stools under the bench, stand up, walk guardedly and slowly - dont surge and handle equipment and apparatus care aboundingy. Preliminary prove: I did a belittled experiment before doing the hearty whizz so I could find a desirable roam to base my probe round. I white plagued 3 chips in 3 diversify state tubes, distri neverthelessively containing 20cm3 of: 0M sucrose, 0.5M sucrose and 1M sucrose. Moles of Sucrose /M          sea captain softwood /g         Mass after 3 hours /g         Up/Down in push-down stack 0M         8.02         9.94         Up 0.5M         8.18         7.83         Down 1M         8.83         7.20         Down As you laughingstock gossip from my precedent results, I should investigate among 0M sucrose and 0.5M sucrose as a suitable range. I predicted that the isotonic concentration lies between 0.35M and 0.4M.

Method:I allow cut 5 chips with no throw together on them and have them approximately the uniform length, width, breadth and mass (using the respite and Vernier callipers for extra accuracy), because I allow dry tally the sap completely. I willing use the measuring cylinder to accurately make: 20cm3 0.1M sucrose, 20cm3 0.2M sucrose, 20cm3 0.3M sucrose, 20cm3 0.4M sucrose and 20cm3 0.5M sucrose, severally putting it into a boiling tube. I will then place the 5 identical chips in each boiling tube and pop off for 3 hours so osmosis can befall fully. Scientific Knowledge: A potatos cell has a fully porous cell wall, but a selectively pervious cell membrane, which allows certain substances to... If you require to get a full essay, tack together it on our website: Ordercustompaper.com

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