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Osmosis Lab

Target:

Investigate the effect of sucrose concentration on osmosis in Solanum tuberosum by recording the change in mass. •Independent Variable: concentration of sucrose (0. 0 M, 0. 2 M, 0. 4 M, 0. 6th M, zero. 8 M, 1 . zero M) (± 0. 05) •Dependent Variable: final mass of the cylinders of Solanum tuberosum (± 0. 05) •Controlled Adjustable: temperature, initial length of spud cylinders, volume of the alternatives, etc .

Apparatus/Materials:

•Solanum tuberosum (potatoes)

•Sucrose solution (0. 0 Meters, 0. two M, 0. 4 M, 0. 6th M, zero. 8 M, 1 . zero M) (± 0. 05) •Test tubes and holder

•Cork borer

•Weighing equipment (± 0. 05)

•Weigh boat

•Ruler

•Scalpel

•Graduating cylinder

Technique:

1 . Work with cork borer to cut your five potato cyl each having a length of 3 cm. installment payments on your Determine the original mass of each cylinder.

3. Place a cyndrical tube in 12 cm3 of distilled normal water (0. 0 M solution). 4. Do it again the same actions for each solution.

5. Cover and leave to stand overnight.

6. Remove cyl and record the final mass of each.

Info:

Qualitative:

When the potato cylinders were removed from distilled normal water (0. 00 M sucrose solution) that they expanded and got stiffer. When they were taken from 0. two and zero. 4 Meters sucrose answer, they remained just about a similar. Whereas, if they were removed from the 0. 6, 0. 8 and 1 . 0 M sucrose solutions, these people were shriveled and soft. They shrunk in dimensions as well.

Quantitative:

Raw Info:

Recorded (calculated average) info showing the change in many cylinders of Solanum tuberosum due to the effect of different concentrations of sucrose solutions. Concentration of sucrose (± 0. 05 M)Mass of Solanum tuberosum (mean of 5 trials intended for each) (± 0. 05 g)

InitialFinal

0. 00 (distilled water)2. 543. 18

0. 202. 482. 72

0. 402. 662. 48

0. 602. 722. sixty-eight

0. 802. 521. seventy six

1 . 002. 641. 74

Calculations:

Highly processed Data:

Concentration of sucrose (± zero. 05 M)Standard deviation σ (correct to 4 d. p) 0. 00 (distilled water)0. 0837

0. 2 hundred. 1483

0. 400. 1013

0. 600. 3834

zero. 80...

Reported: Hoong, Tho Lai. " Diffusion and Osmosis. " Science 2 . Singapore: EPB Pan Pacific, 2007. 76-78. Print.

Kwan, Lam Peng., and Geoff Hayward. " Diffusion, Osmosis and Area: Volume Proportion. " Biology: A Study course for 'O ' Level. Singapore: Federal Publications, 2005. 23-33. Print.

Ward, Bill. " Skin cells; 2 . 5 Membranes. " Pearson Baccalaureate Higher Level Biology. Malaysia: Pearson Education Limited, 2007. 34. Print.

02.08.2019

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