Was there glucose in the dialysis bag?
The dialysis tubing was clipped to form a bag so that glucose and starch was fed into the bag through the other end, and was also clipped to avoid the seeping of the solution. Water with several drops of iodine added to it until it was visibly yellow-amber was added to a 400ml beaker.
What molecules remain in dialysis bag?
What molecules remained inside of the dialysis bag? The starch had remained inside of the dialysis bag.
Do the sucrose molecules leave the dialysis bag?
The sucrose molecules will not leave the cell because they cannot pass through the membrane.
Did all of the molecules diffuse out of the bag?
In the above question, if the bag refers to a dialysis bag, the membrane of a dialysis bag is a selectively permeable membrane that does not allow the movement of all molecules to diffuse across the ,membrane. Thus, only water molecules will pass across the bag and limit the movement of other molecules.
Can starch pass through a semipermeable membrane?
Starch does not pass through the synthetic selectively permeable membrane because starch molecules are too large to fit through the pores of the dialysis tubing.
Why does starch turn blue-black when iodine is added?
Amylose in starch is responsible for the formation of a deep blue color in the presence of iodine. The iodine molecule slips inside of the amylose coil. This makes a linear triiodide ion complex with is soluble that slips into the coil of the starch causing an intense blue-black color.
Why does the brownish color of an aqueous elemental iodine solution disappear when a few crystals of your product are added to it?
Why do iodine stains disappear? Molecular iodine acts as an oxidizer, and disodium disulfite as a reductant. When iodine I2 disappears from the system, brown-orange color of stains disappears as well.
Why is iodine kept in the dark?
In presence of light Iodine solution undergoes a photo-decomposition reaction so it must be stored in a dark bottle , generally in amber bottle to minimize the amount of light that the solution is exposed to.