Osmosis paper Essay Example | Topics and Well Written Essays - 500 words

Osmosis paper - Essay Example other hand, if the concentration of sucrose in a solution is high, then the rate of diffusion of water molecules through a selectively permeable membrane would also be high. These concepts were tested in an experiment conducted, which is illustrated below. .25M, .5M, .75M, and a control set-up with deionized water. These were placed in individual dialysis tubing which were semi-permeable bags, and labeled accordingly. With a string the individual dialysis tubing considered as baggies with corresponding content were tied to seal off, and keep it from spilling out. Next, the individually prepared bags were carefully wiped off excess external surface water with a paper towel. Using an electronic balance, the initial weight of individual bags with contents were taken and recorded. Subsequently, four beakers were prepared with 150ml of deionized water. Then, the individual bags were immersed in the prepared beakers with 150ml of deionized water, respectively for thirty five (35) minutes. After the lapse of thirty five (35) minutes, one by one the bags were taken out carefully, wiped from external water and weighed. The results were also noted.   After the experimental data were gathered, the materials were cleansed, and returned to the s tock room, while the bags were properly disposed. As well, the working laboratory table was wiped dry and clean. The initial weight of the bag with .25M solution was 17.31g. After the experiment, its weight was 18.23g. The bag with.5M solution’s beginning weight was 9.07g, after the experiment, the weight was 10.75g. The bag with .75M solution’s beginning weight was 3.7g, after the experiment, the weight was 5.09g. Finally, the initial weight of the control bag was 9.95g, after the experiment, the weight was 10.9g. These findings are reflected on the table below: Table 1 shows that There were 5.18 % difference in .25M sucrose solution, 16.95% difference in .5M sucrose solution, 31.63% difference in .75M sucrose