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When iodine sublimes, it transitions from a solid state directly to a gaseous state without passing through a liquid phase. This process requires energy, known as the enthalpy of sublimation, which is absorbed from the surroundings. As the iodine molecules gain energy, they overcome the intermolecular forces holding them together in the solid form, resulting in the formation of gaseous iodine. This absorption of energy leads to a cooling effect in the surrounding environment.
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What is iodine vapour?
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.
Which halogen goes from the solid phase directly to a gas?
Iodine is the halogen that sublimes directly from a solid to a gas at standard pressure and temperature.
How much energy is needed to melt 25.4grams of l2?
To calculate the energy needed to melt 25.4 grams of I2 (iodine), you can use the formula: energy = mass x heat of fusion. The heat of fusion for iodine is 15.52 kJ/mol. First, find the molar mass of I2 (253.8 g/mol) and then convert the mass to moles. Finally, multiply the moles by the heat of fusion to get the energy needed.
What is sublimation and give an example of a substance that sublimes?
If zinc chloride is heated strongly the solid will sublime.
When you warm the test tube crystal of iodine what is the result?
it result to the formation of metal sulfates
Which halogen sublimes to violet vapours?
iodine is the only halogen in solid form. so it is the halogen which gives violet vapours on sublimation...
Which of the element is sublimes on heating?
One example of an element that sublimes on heating is iodine. When solid iodine is heated, it directly changes into a gas without passing through a liquid phase.
How can you separate iodine mixed with zinc oxide?
One way to separate iodine from zinc oxide is through sublimation. Since iodine sublimes at a lower temperature than zinc oxide, you can heat the mixture to a temperature where iodine sublimes, and then collect the iodine vapors while leaving behind the zinc oxide.
What solid sublimes on heating?
Some solids are Carbon dioxide, Snow, Iodine and Naphthalene
What ductility of iodine?
Iodine is a brittle solid at room temperature and does not exhibit ductility. It easily sublimes into a gas when heated.
What element sublimes when gently heated?
Iodine is an element that sublimes when gently heated. Sublimation is the process of a substance transitioning directly from a solid to a gas phase without passing through the liquid phase.
What gas is produced when iodine are heated?
When iodine is heated, it sublimes directly from a solid to a purple gas. The gas produced is diatomic iodine molecules (I2).
What is iodine vapour?
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.
What is an element that is a shiny black solid and gives off a purple vapor when heated?
Iodine ------------------------------------------- The element you describe sounds like iodine, a good test to make sure that it is iodine is to see if the substance sublimes. This means a solid sample of iodine will turn straight from a solid into a gas with no liquid stage.
Iodine liquid or solid?
Iodine is a solid at room temperature and pressure. It sublimes directly from a solid to a purple vapor without melting.
Does solid iodine give blue gas on sublimation?
Yes, solid iodine sublimes directly to a purple vapor, not blue.
Which halogen goes from the solid phase directly to a gas?
Iodine is the halogen that sublimes directly from a solid to a gas at standard pressure and temperature.
