Question

Question 10 2 pts If you fill up a cellulose bag with a solution of sucrose and table salt; then immerse the cellulose bag into a beaker filled with iodine diluted in water. After 1 hour, you observe the following: the solution in the beaker has become black; the solution inside the cellulose bag is also black. What is your conclusion? lodine turned black because of the presence of proteins Starch leaked out of the bag and iodine diffused into the bag lodine diffused into the bag only, no leaking of starch out of the bag Salt leaking out of the bag cause the change in color

Answer 1

The answer will be the starch is leaked out of the bag and iodine diffused into the bag.

Because as starch reacts with iodine and makes cross-linking and makes blue dark colours.

Thus starch has to be leaked into the outside and reacts with the iodine which is present outside will give blue black colour.

Thank you.