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Adding iodine solution to a temporary mount is used to stain and increase visibility of cellular structures like cell walls, nuclei, and starch grains. It helps highlight specific features under a microscope by reacting with components in the cells, aiding in their identification and study.

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1y ago

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Why do we dip the leaf in water before adding the iodine solution?

Dipping the leaf in water before adding the iodine solution helps to soften the leaf tissue, making it easier for the iodine solution to penetrate and react with the starch present in the leaf. This process enhances the visibility of the starch by allowing the iodine solution to spread more evenly throughout the leaf.


Do water and iodine form a solution?

Iodine is very low soluble in water; adding potassium iodide the solubility is higher.


What is the purpose of adding iodine solution to the onion cell?

The purpose of adding iodine solution to the onion cell is to stain the cell's starch granules. Starch granules will appear blue-black when iodine solution is added, allowing for easy visualization of the presence of starch in the cell.


What colors does starch turn if there is a little amount present?

starch will not change its own colour but it can change the colour of iodine solution. iodine solution is originally brown. after adding starch, it will turn into dark blue.


What is the function of sunlight in iodine solution?

Sunlight can help catalyze the reaction between iodide ions and iodate ions in an iodine solution, leading to the formation of free iodine. This reaction is important in the process of determining the concentration of vitamin C.


How can one effectively test iodine?

To effectively test iodine, one can use a starch test. This involves adding a few drops of iodine solution to a sample and observing if a blue-black color appears, indicating the presence of iodine.


What is the difference between strong iodine solution and weak iodine solution?

their color


Is iodine solution ionic?

A solution of iodine is covalent.


Add a drop of iodine to both a distilled water test tube and to the test tube containing the starch solution in the test tube What do you observe?

The starch solution will turn black, while the distilled water will remain brown, the same colour as the iodine. This is actually because water, normally used as a control, does not contain any starch and as we know, the iodine test is highly specific for the presence of starch hence no colour change other than iodine dissolving in water to form an iodine solution contrary to starch which we know complexes with iodine, to form starch-iodine complex forming the blue-black colour observed


What is the solution of tincture of iodine?

iodine


Is the weak iodine solution is tincture of iodine?

Yes, a weak iodine solution is often referred to as tincture of iodine. Tincture of iodine typically contains a 2% to 7% iodine solution in alcohol and water.


What is the composition of iodine solution?

Otherwise a solvent is stated, a solution of iodine contains only iodine molecules.