Please give a clear explanation as to why the answer would be. A clear explanati
ID: 277306 • Letter: P
Question
Please give a clear explanation as to why the answer would be. A clear explanation is needed.
The experiment was repeated, and an amber-colored solution was added to the water in the beaker. After 10 minutes, the water in the beaker remained amber-colored and the starch solution had turned blue-black. The most likely reason for this observation is that
(1) starch molecules moved out of the thistle tube (2) water molecules moved into the thistle tube (3) amber-colored solution moved into the thistle tube (4) water molecules moved out of the thistle tube
bELOW IS diagram
A concentrated starch solution was placed in a thistle tube with a semi-permeable membrane covering the wide opening. It was then placed in a beaker of water. The height of the solution in the tube was measured every 5 minutes for 25 minutes. The setup and the data collected are shown below. Thistle tube Membrane Water Starch solution Before After 25 minutesExplanation / Answer
The amber-colored solution moved into the thistle tube.
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The ambered color solution moved into the tube and reacted with starch and turned it to blue- black color.
( It may be the iodine solution that reacted with starch to form starch-iodide complex with blue-black colour)