Laboratory question about osmosis and dialysis?

Question

We mixed KCl.6H20, egg white and tap water. We wrapped a colorless cellophane on the mouth of the test tube and immersed the test tube, inverted in a beaker half filled with water. Incubated it for 1 hour.

After 1 hour these were the details. There was no color change between the two liquids. The volume of the solution inside the test tube increased.

Next we put a sample of water inside the beaker in two test tubes and we put samples of the solution from the test tube into two seperate test tubes.

Then we added silver nitrate in one test tube with the water from the beaker and in the test tube with the solution from the original test tube.(These resulted into a solution with a kind of white precipitate)

In the other two we put sodium hydroxide and copper sulfate in both ther remaining tubes. (These formed a kind of blue precipitate in each tube) Well I'm not sure what actually formed in this set of test tubes.

Now, I would like to know if there are any chemical equations involved considering they formed precipitates. If there are does anyone know what the equation is? This is for a report not explained well by our professor..I'll gladly appreciate the help..And could anyone explain the specifics to the osmosis and dialysis processes involved as this is the center of the dicussion..thanks

Answer 1

we must assume that something migrated thru the cellophane into the water because of the white precipitate that occurred in the water from the beaker.if i remember correctly silver nitrate will precipitate silver

if dissolved in a neutral water solution and a base is added.so one can assume that what ever migrated thru was basic in nature  as far as the other reactions don't know whats going on there

Answer 2

Actually

on wikipedia