molecular weight higher than the pore size of the tubing or dialysis bag material doesnt go.
can protein (albumin) diffuse out of a dialysis tube and why
The water in the dialysis bag would diffuse out into the molasses solution. This is because there is a high concentration of water inside the dialysis bag and a a lower concentration of water in the molasses solution. By diffusion or osmosis, the water would tend to move from the concentrated bag to a less concentrated solution.
When considering a dialysis bag, size will determine whether the molecules will permeate the bag. The smaller the molecules, the easier they well be able to pass through, and the faster diffusion will take place. Starch is a carbohydrate - a macromolecule formed from repeating bonded units of glucose monomers. Salt, in comparison, is simply Na+ and Cl- ions (in the aqueous solution). Starch will have a much tougher time getting through the artificial membrane, so it is a safe bet that salt will diffuse faster.
starch doesnt diffuse through the dialysis membrane.
Yes, protein can diffuse through dialysis tubing due to its small size and ability to pass through the pores of the tubing.
urea
At the end of the experiment, the starch solution in the dialysis bag remains unchanged in terms of its concentration, as starch molecules are too large to pass through the dialysis membrane. However, if iodine was present in the surrounding solution, it may have entered the bag and reacted with the starch, resulting in a color change. This indicates that while small molecules can diffuse through the membrane, the larger starch molecules cannot. Thus, the starch solution inside the bag retains its original properties.
Distilled water will move out of the dialysis bag and into the sucrose solution due to osmosis and the fact that the dialysis bag has a hypertonic solution of H2O as compared to the sucrose solution.
meh
During dialysis, urea, creatinine, excess electrolytes (such as potassium or sodium), and excess fluid are some of the solutes that typically diffuse from the patient's blood into the dialysis solution.
If you place a dialysis bag filled with water into a beaker of water, there will be no significant change in the dialysis bag's contents, as both are isotonic. Since there is no concentration gradient for water to move across the semi-permeable membrane of the dialysis bag, osmosis will not occur. The bag will remain filled with water, and the surrounding water in the beaker will remain at the same level. However, if the dialysis bag contains solutes that are not present in the beaker, osmosis may occur, leading to a change in the bag's volume.