Why you use starch as an indicator?


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2012-12-09 23:37:28
2012-12-09 23:37:28

Starch is not the indicator. Iodine is the indicator of starch.

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Starch is a complexometric indicator.

Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. FOR WHAT PURPOSE WE USE STARCH-IODINE INDICATOR PAPER

Lugol's Iodine, a starch indicator solution, can be used to determine if the starch has diffused through the membrane. If the indicator comes in contact with starch it will turn black.

indicator help us find out find out which molecules diffused and which didn't.... for example: starch indicator indicate starch......and.......glucose indicator indicate glucose.

Starch is not used in order to do this. This is because starch is able to form a complex along with the iodine and this is the indicator.

indicator help us find out which molecules diffused and which didn't for ex: starch indicator indicate starch and glucose indicator indicate glucose.

When there is a positive test for starch using the starch indicator you will observe a color change. The color changes from amber to blue black.

Iodine -- it is used as a starch indicator.

Iodine solution is an efficient indicator for starch. It will go from a light brown colour to a black colour if starch is present and will stay light brown if no starch is present. Hope this Helps!

yes there is a reaction between glucose solution and starch indicator.

when starch indicator is added, the solution turns from dark blue-black to colourless.

Use Lugol's Iodine to test for starch. Substances that react positively should turn black.

the chemical indicator used is iodine and starch turns in dark blue colour ARE U HAPPIEE WID MA ANSWER ? THANKU

The iodine produced from the KIO3 reacts with the starch to produce the blue black colour used as the indicator

Iodine is used as an indicator for starch. When a substance has iodine added to it, then it will turn into a dark blue color. This is a sign that the substance indeed has starch in it.

No. Iodine is an indicator of starch which results in a bluish-black color when mixed.

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.

To prepare 1% starch indicator weigh 1g of starch powder.Measure 100ml of water and keep it for using some of 100ml water taken,make a paste of starch in watchglass and mix this paste with little and continuous strring of water which is kept for heating.when all the paste is added,allow for heating 5more minutes then starch indicator is ready for titration.Note:no lumps of starch should present in water

it is used to indicate acidic radicals which reacts with the iodide solution.

Iodine. If you ever get iodine on your clothing, it will leave a permanent stain because of the starch.

All the alpha amylase molecules should rupture . Boil water and then add to the boiling water required starch. Make sure that the starch is alpha and not beta amylase. Use freshly prepared starch solution for iodometric titrations. --unnikrishnan

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