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Essay text:
(Fig 1.0)
Sucrose concentration (M) Initial mass
(kg) Final mass
(kg) Change in mass
(%)
0.10 0.95 1.25 31.57
0.20 0.94 1.13 20.21
0.30 1.03 1.15 11.65
0.40 0.95 1.05 10.52
0.50 0.88 0.86 -2.27
0.60 0.93 0.84 -9.67
Control 0.99 1.40 42.41
Discussion.
Osmosis is the passive diffusion of water molecules across a selectively permeable membrane from a down a concentration gradient. The water potential of a system is the tendency for water to exit the system. In this experiment the aim was to measure the tendency for water to leave the tuber cells. As the water potential of pure water is zero the concentration of sucrose in solution will have an effect on the water potential, this is called the solute potential...
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