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Hello,
I was trying to do the iodine starch reaction for a project but it didn't work! I used Morton Iodized salt which should have iodine in it but when I added in the white vinegar, hydrogen peroxide, and laundry starch it turned yellow indicating that it has no iodine!!
Help!!
Iodine Starch Project
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Re: Iodine Starch Project
Hello!
I agree with you that the iodized salt should have had a reaction. However, since it did not, I would assume that there was an error(s) in the materials or in carrying out the procedures. Common errors are the hydrogen peroxide is not 3% hydrogen peroxide, measurements are done incorrectly, and steps are done out of order. If you have not done so already, I would recommend checking all of the materials and doing more trials to see where the error lies.
I hope that helps! Ask again if you continue to have problems.
-Kayli
I agree with you that the iodized salt should have had a reaction. However, since it did not, I would assume that there was an error(s) in the materials or in carrying out the procedures. Common errors are the hydrogen peroxide is not 3% hydrogen peroxide, measurements are done incorrectly, and steps are done out of order. If you have not done so already, I would recommend checking all of the materials and doing more trials to see where the error lies.
I hope that helps! Ask again if you continue to have problems.
-Kayli
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Purple Iodine
Hi!
My science fair is tomorrow and I have 1 question. What does it mean when Iodine turns the solution completely purple? I know that the purple indicates that there is iodine. I am testing the amount of time it takes the whole iodine starch solution to turn purple if that makes any sense!
Help!!
Moderator note: I merged this question with your previous post, that way the expert who has been helping you is more likely to see your new question and help you! Thanks!
My science fair is tomorrow and I have 1 question. What does it mean when Iodine turns the solution completely purple? I know that the purple indicates that there is iodine. I am testing the amount of time it takes the whole iodine starch solution to turn purple if that makes any sense!
Help!!
Moderator note: I merged this question with your previous post, that way the expert who has been helping you is more likely to see your new question and help you! Thanks!