Wiki User
∙ 12y agowhen starch indicator is added, the solution turns from dark blue-black to colourless.
Wiki User
∙ 12y agoWhen an indicator such as iodine is added to a solution containing starch, a blue-black color change occurs. This reaction is commonly used to detect the presence of starch, as the blue-black color is characteristic of this complex formed between the starch and iodine molecules.
As you know that iodine act as indicator for testing of starch so when a drop of iodine is added to starch it turns bluish black but when added to distilled water nothing happens except the colour of water which turns brown and its is the colour of iodine.
The starch indicator solution will turn dark blue/black since it will react with the starch in the solution. Glucose will not react with the starch indicator, so it will remain the same color. This can be used to detect the presence of starch in the solution.
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
The indicator for starch is iodine solution. Iodine changes color from brown to blue-black or purple-black in the presence of starch.
The presence of starch is indicated by a blue-black color when iodine solution is added.
Iodine is commonly used as a chemical indicator for starch. When iodine is added to a substance containing starch, it will change color from brown to blue-black in the presence of starch.
Starch indicator should not be added at the beginning of an iodometry titration because iodine can form a complex with the starch, resulting in a blue-black color that can obscure the endpoint. It is best to add the starch indicator near the endpoint, when the iodine is almost completely reacted, to help visualize the color change.
Starch indicator solution will remain its original color (usually colorless) in the absence of starch. Without starch present, there will be no color change observed when using starch indicator solution.
Iodine is commonly used as an indicator for starch. It turns blue-black in the presence of starch, allowing for easy detection of the presence of this polysaccharide.
The color change that occurs when iodine solution is added to starch is a dark blue or purple color. This reaction is commonly used to test for the presence of starch in a solution.
Starch indicator is added after sodium thiosulphate in iodometric titrations to help visualize the endpoint of the reaction. Starch reacts with any excess iodine produced at the endpoint, forming a dark blue-black color, allowing for easier detection of when all the thiosulphate has reacted.
Iodine is commonly used as a chemical indicator for the presence of starch. When iodine comes into contact with starch, a blue-black color change occurs, making it easy to visually detect the presence of starch in a solution.
As you know that iodine act as indicator for testing of starch so when a drop of iodine is added to starch it turns bluish black but when added to distilled water nothing happens except the colour of water which turns brown and its is the colour of iodine.
A dark blue/black color develops when iodine solution is added to starch solution. This color change occurs due to the formation of a starch-iodine complex, where the iodine molecules interact with the helical structure of the starch molecules, resulting in the blue/black color.
Iodine is an indicator for starch. The reaction between iodine and starch causes a color change from brown/orange to blue/black.
The iodine test can indicate the presence of starch in food samples. When iodine is added to a sample containing starch, it will turn blue-black in the presence of starch. This color change is used as a visual indicator for the presence of starch in the food sample.
Starch is added towards the end of titration as an indicator to help visualize the endpoint. When the starch is added, the solution will turn blue-black in the presence of excess iodine, indicating that the reaction is complete. This color change helps in accurately determining the endpoint of the titration.