Benedict's solution is used to test for simple sugars and iodine is used to test for starches.
Iodine crystal is solid Iodine. Iodine solution is when Iodine crystals are dissolved in water.
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I read this as a 1 molar solution, which is to say, a concentration of one mole of NaOH per liter of solution. If that is not what you mean, please don't abbreviate the words (whatever the M and the m stand for) and write them out in full. I don't know what else it would mean other than molar.
Iodine test is a procedure that tells whether a certain element or the such contains starch (or sugar) in it.In this test, we add iodine solution (with, possibly, KI reagent) to a material [in your case, sugar]. If starch ispresent, a blue-black, somehow purple, color will result, changing the initial color of iodine. If starch amylase (sugar) is NOT present, the color will remain orange/yellowish.
Povidone Iodine is a mixture of Polyvinylpyrrolidone and Iodine. Tincture of Iodine is a mixture of Elemental Iodine + KI/NaI dissolved in a mixture of ethanol & water
their color
Iodine crystal is solid Iodine. Iodine solution is when Iodine crystals are dissolved in water.
Starch is insoluble in water. The commonest kind of iodine solution is known as tincture of iodine, which is an orangey-brown liquid. Please see the links.
Simple(sugar): benedicts solution. Turns bright orange. Complex(starch): iodine turns dark purple/black
The iodine stain solution you're referring to might be Lugol's iodine. This is iodine and potassium iodide in water. The product available in a pharmacy is tincture of iodine which is iodine and potassium iodide in ethanol and water. Please see the links.
Iodine is a chemical element and contains no other substance. Tincture of iodine is a solution of iodine in alcohol, used to disinfect wounds, and contains four different elements.
It's the same thing. It is a solution of water that has been saturated to the max with potassium, then iodide is added (a form of iodine). So it is a potassium iodide solution.
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Iodine
A solution of iodine is covalent.
I read this as a 1 molar solution, which is to say, a concentration of one mole of NaOH per liter of solution. If that is not what you mean, please don't abbreviate the words (whatever the M and the m stand for) and write them out in full. I don't know what else it would mean other than molar.
iodine