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Because it didn't react with the iodine, i don't know

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Jude Beatty

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Q: Why did the mixture stop turning the drops of iodine solution blue after 240s?
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Why did the the mixture stop turning the drops of iodine solution blue after 240 s?

why did the mixturestop turning the drops of iodine solution blue after 240 s


Why was the mixture stop turning the drops of iodine solution blue after 240 s?

This is because there was no more starch left so the mixture stopped turning the drops of Iodine Solution blue after 240 s.


Why did the mixture stop turning the drops of iodine solution blue after 240 s?

Because it didn't react with the iodine, i don't know


Which color is given by glycogen on reaction with iodine?

reddish-brown * the color of glycogen solution with drops of NaCl and Iodine solution is Dark Orange. :) *NaCl will intensify the colour as it fulfills the optimum ionic requirement of the reaction


What is the chemical test to confirm the presence of starch?

1. Place a small amount of starch powder in a test tube filled with cold water 2. Boil it to make a clear solution 3. Once the solution has cooled off, you should put 3 or 4 drops of iodine solution in it. 4. The solution should turn dark blue.


Should you take iodine drops after having half thyorid removed?

should i take iodine drops after having half of my thyorid removed


Is there a way to find vitamin C in food without using DCPIP?

You could use drops of iodine solution (Povidone-iodine may work)to estimate vitamin C in solutions. Estimate the number of drops/volume needed to titrate a known sample of vitamin C (a tablet). Then apply that to unknown samples.


Test of starch?

1. Place a small amount of starch powder in a test tube filled with cold water 2. Boil it to make a clear solution 3. Once the solution has cooled off, you should put 3 or 4 drops of iodine solution in it. 4. The solution should turn dark blue.


How to test for starch?

A chemical test for starch is to add iodine solution (yellow/brown) and look for a colour change.


What is the principles of iodine test?

-What is the principle reason for the iodine test?Answer:-This test is used to test for starch prenest in a given solution orIodine test is a test used to determine the presence of starch in a particular substance.A positive result will yield the purple-black color.For example, adding a few drops of iodine solution to potato will seem purple-black color in this solution --->This means that the potato contains starch.by:Abdullah nasser Al-naffar


Where i can buy lugol's iodine solution in Philippines?

I sell Lugol's formula iodine in the Philippines for $35 per 30ml (1 ounce) bottle. 4 drops daily will last approx. 3-4 months. Email me kahunarica@yahoo.com. Thanks.


A potato tuber has been cut into two halves A few drops of iodine solution are placed on the cut surface of one of the halves What colour change will be noticed?

brown dark