To test if a solution is iodine, add a few drops of starch solution. If the solution turns blue-black, iodine is present, as iodine forms a blue-black complex with starch.
You are given a sample of a solution. How would you check the possibility of it being an iodine solution?
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To determine if a solution is iodine, perform a starch test. First, add a few drops of starch solution to the sample. If the solution turns blue-black, iodine is present because iodine reacts with starch to form a blue-black complex. This reaction is a well-known test for the presence of iodine. If the solution does not change color, it is unlikely to be iodine. This method is simple and effective for detecting iodine in various solutions. Always conduct tests with proper safety precautions in a controlled environment to ensure accurate results.
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