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Bendedict's solution is a blue solution, when glucose is present, a brick-red precipitate is formed.

If starch is present, the iodine solution will turn from yellowish-brom to blueish-black.

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โˆ™ 2010-09-06 15:29:14
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Q: How iodine and Benedict's solution tested for starch and glucose?
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How does iodine detect starch?

Iodine reacts with the coiled polymer of glucose found in starch. When the solution turns bluish-black, then the iodine test is positive for starch.


What indicators are used to detect glucose and starch in a solution?

Lugol's Iodine is used to detect starch in a solution.Benedict's is used to detect simple sugars (glucose) in a solution.


What is the indicator for carbohydrates?

Simple(sugar): benedicts solution. Turns bright orange. Complex(starch): iodine turns dark purple/black


Which white powder turns orange in benedicts solution?

Starch solution.


What do lugols iodine solution nd clinitest tape for?

Lugols: tests for starch Clinitest- Glucose


What is iodine solution used for?

iodine solution is used for finding starch in substances iodine solution is used for finding starch in substances


What colour will a starch turn if mixed with benedicts solution?

blue


What tests are used to test for the presence of starch and glucose?

for the starch iodine test is performed in which the starch reacts with iodine to produce dark blue colour which confirms the presence of starch. for glucose benedict's and fehling's test is performed. benedict's test: 1 ml sample is mixed with 1 ml of benedicts solution and the heated upto boiling if the colur changes to brick red then it confirms the presence of glucose fehling's test: similarly 1 ml fehling's solution I & fehling's solution II each in taken together and to it 1 ml of the sample is takenon then heated uptill boiling. if the colour changes to brick red the it confirms the presence of glucose.


Test for starch with the solution?

Starch is tested with the solution called Iodine. If starch is present when Iodine is dropped in, the solution will turn a brown, black color.


Why does iodine solution with starch solution turns blue black?

because starch is present in the solution Probable a complex beta amylose (a compound from starch)-iodine is formed.


What will happen if you pour starch indicator solution into the cell and filled the beaker with starch and glucose solution?

The starch indicator solution will diffuse out of the bag (cell) into the beaker, changing the color of the starch solution to a blue, purple, or black color (assuming that it's iodine). The color of the indicator solution inside the bag will not change, because only the glucose can diffuse into the bag, but the starch cannot diffuse into the bag.


What chemical detects glucose?

Iodine can detect starch, which is a polymer of glucose

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