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A "vapor" in chemistry is always the gas phase of a substance that is more familiar in one of its condensed phases: liquid or solid. Therefore, iodine vapor is the gas phase of the element iodine, and has the same molecular composition as the solid, I2. Iodine is a solid at standard temperature and pressure, but sublimes directly to gas phase, without any intermediate liquid phase, at only moderately higher temperatures than the standard.
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The element which gives you violet vapour on heating it?
Iodine is the element that gives off violet vapor when heated.
What is a dark grey solid that sublimes to form a violet vapor?
Iodine ( I2 ) the fourth halogen (after F2 ,Cl2 -both gases- and Br2 -liquid- ) Iodine has a shiny, dark grey, metallic look (but it is not a metal) with crystal forms which subliMATES to violet vapour. It is slightly soluble in water, better in a Iodide solution (to form I3- complex ions) and in ethanol (red-brown tincture)
Why does the concentration of iodine ions remains constant in the iodine clock reaction?
Iodine ion is not consumed; in the first step the iodine ion is oxidized to iodine, in the second step iodine is reduced to iodine ion.
what is the molecular mass of water vapour?
The molecular mass of water vapour is 18.01528
What is the difference between Iodine bought in a pharmacy and the Iodine stain solution?
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.
Is vapour invisible?
Whi many are, many are not (iodine vapour is quite easily seen, for example, where water vapour is not).
How will you separate iodine and salt mixture?
heat the mixture iodine will sublime collect the iodine vapour separately and cool
How can iodine crystal be remove from the mixture?
Iodine crystals can be removed from a mixture by sublimation, where the crystals are heated to turn directly into vapour without melting. The vapour can then be condensed back into solid iodine crystals. This technique allows for the separation of iodine from other components in the mixture.
What is the purple substance of the iodine after heating?
It is vapour formed during the process of sublimation.
What is the color of the gases Chlorine bromine iodine?
green, red-brown, violet-pink respectively.
What is the element that contains diatomic molecules and purple in vapour?
The element that fits this description is iodine. In its vapor phase, iodine exists as diatomic molecules (I2) and displays a distinctive purple color.
The element which gives you violet vapour on heating it?
Iodine is the element that gives off violet vapor when heated.
Purple iodine vapor appears when solid iodine is warmed is that chemical or physical change?
It is a physical change because the iodine is changing state from solid to gas without forming any new substances.
What black solid forms a purple vapour when heated gently?
Iodine is a black solid that sublimes directly to a purple vapor without passing through a liquid phase when heated gently.
Voilet colour of iodine vapour is due to?
The violet color of iodine vapor is due to the interaction between the iodine molecules, which absorb light in the visible spectrum, resulting in the perception of the colored light. This is known as selective absorption of light.
Does iodine turn into vapour on heating?
Yes, iodine does sublimate directly from solid to vapor form when heated without turning into a liquid state. This is due to its relatively low melting point of 113.7°C.
What dark crystals turn into purple vapour when they are heated?
Amethyst crystals are known to turn into purple vapour when they are heated. This phenomena is due to the presence of iron impurities in the crystal structure of amethyst that react to heat by creating the purple coloring.
