Which of the following solids undergo sublimation upon heating?a)Iceb)Ureac)sugard)IodineCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

The process of changing solid directly into gases without changing into liquid is called sublimation. In the substance given above only Iodine is a sublime substance.

Answer

Iodine is a sublim so it undergo sublimation....so the correct answer is D.

Answer

Iodine, Option D.

Answer

Iodine

Answer

Iodine is the solid that undergoes sublimation upon heating. Sublimation is the process in which a solid directly converts into a gas without passing through the liquid phase. Let's understand this in detail:

Sublimation:
Sublimation is a physical change in which a solid substance transitions directly into a gas phase, bypassing the liquid phase. This occurs when the vapor pressure of the solid exceeds the atmospheric pressure. The process is endothermic, meaning it requires the absorption of heat energy. Sublimation is the reverse process of deposition, where a gas transitions directly into a solid.

Iodine:
Iodine is a solid element that exists in the form of dark purple crystals. It has a characteristic odor and sublimes readily at room temperature. When heated, solid iodine directly converts into a purple-colored gas, without melting into a liquid. This is why iodine is commonly used in chemistry experiments to demonstrate sublimation.

Explanation of other options:
a) Ice (solid water) does not undergo sublimation. Instead, it undergoes a phase change from a solid to a liquid when heated, known as melting.
b) Urea is a solid substance that does not undergo sublimation. Instead, it decomposes upon heating, breaking down into gases such as ammonia and carbon dioxide.
c) Sugar (sucrose) is a solid substance that does not undergo sublimation. It decomposes when heated, forming caramel and releasing water vapor.

In conclusion, among the given options, only iodine undergoes sublimation upon heating.

Answer

Iodine goes under sublimation as it disappears within no to me when exposed to air, it changes its state directly from solid to gas

Answer

The process of changing solid directly into gases without changing into liquid is called sublimation. In substances given above iodine is a sublime substance.

Answer

Option D

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