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An Investigation into the Affect of Changes in Temperature on the Rate of Osmosis
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| Submitted: Thu Jul 11 2002
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James MacDonald An Investigation into the Affect of Changes in Temperature on the Rate of Osmosis Aim: Devise an experiment to determine the effect of temperature on the rate of osmosis. Apparatus: NaCl 60cm³ 5 mol. dm³ Scissors 20cm lengths of visking tubing Water Bath 0°-50° Ice Stop Clock Top-Pan Balance accurate to two decimal places 10cm³ Pipette Tissue Variables: Temperature Concentration Prediction/Hypothesis: Method: The visking tubing was dipped into warm water to soften it and then knotted tightly at one end. The other end was left open so the 6cm of salt solution could be put into each, then they were all knotted tightly at the other end. Results: Original Weight (g) Weight After Osmosis (g) Change In Weight (g) % Change In Mass Cold 8.82 10.33 1.51 17.12 9.52 11.23 1.71 17.96 8.66 9.72 1.06 12.24 Hot 8.42 11.46 3.04 36.10 8.68 12.08 3.40 39.17 9.68 13.33 3.65 37.71 Conclusion: ...
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