The first picture shows the results of the experiment. The test tube with the red precipitate is the test tube with glucose and Benedict solution was added to it, turning it red as glucose is a reducing sugar. The second test tube shows iodine being added to the test tube with the glucose solution to test it for starch. The last test tube shows that there is starch in the visking tubing as the iodine turned blue black.
The picture above shows the glucose solution with Benedict solution being heated up. It is being heated up to speed up the reaction.
The experiment is as follows.
The picture above shows the glucose solution with Benedict solution being heated up. It is being heated up to speed up the reaction.
The experiment is as follows.
- Place a solution of starch and glucose in visking tube.
- Place the visking tube in a beaker of water for sometime
- Drop a few drops of Benedict solution into the beaker to show that glucose has move from the visking tube to the beaker.
From this experiment, I have learnt that the visking tube is partially permeable like the humans intestines.
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