Experimental set up

While you are waiting $(20$ minutes$),$ complete the following exercise:

$($a$)$ List the initial locations $($inside or outside the bag$)$ of all of the molecules that are available for osmosis through the membrane, and then LABEL them in the picture below:

$($b$)$ For each molecule you listed in $($a$),$ PREDICT their direction of net $($overall$)$ diffusion: into the bag, out of the bag, both into and out of the bag equally, or none $($will not diffuse across the membrane$).$ State your reason for each prediction.

$60$

$7.$ After $20$ minutes, remove the tubing.

$8.$ Test the bag contents for presence of barium cloride $($ White barium sulfate precipitate forms in magnesium sulfate presence$).$

$9.$ Test the beaker contents for presence of iodine. Record your observation in your data table $.$

Data table

$\backslash$table$[[\backslash$table$[[$Barium cloride test for solution in$],[$membrane$]],$Iodine test for solution in test tube$],[,],[,],[,],[,]]$