Why is naphthalene a solid at room temperature?

Answer and Explanation: In naphthalene, the intermolecular forces are strong so that they held together all the constituent particles of naphthalene.

Is naphthalene a solid at room temperature?

Naphthalene (NAF-thuh-leen) is a white crystalline volatile solid with a characteristic odor often associated with mothballs. The compound sublimes (turns from a solid to a gas) slowly at room temperature, producing a vapor that is highly combustible.

Why does naphthalene sublime at room temperature?

Naphthalene and camphor sublime under normal condition of temperature and pressure because they have very weak inter molecular forces. - Naphthalene sublimes easily because it is made up of non- polar molecules which are held together only by weak van der Waals inter molecular forces.

In what form is the naphthalene ball solid liquid gas?

Naphthalene is a solid that sublimes at standard atmospheric temperature with the sublimation point at around 80 °C or 176 °F. At low temperature, its vapour pressure is high enough, 1 mmHg at 53 °C, to make the solid form of naphthalene evaporate into gas.

Are the substances hexane and naphthalene solids or liquids at room temperature?

Thus far we have considered only interactions between polar molecules, but other factors must be considered to explain why many nonpolar molecules, such as bromine, benzene, and hexane, are liquids at room temperature, and others, such as iodine and naphthalene, are solids.

Exp Heating

Is Naphthalene a polar or nonpolar compound?

Naphthalene is a nonpolar compound. Thus, it is insoluble in highly polar solvents like water.

Is Naphthalene a molecule?

A naphthalene molecule can be viewed as the fusion of a pair of benzene rings. (In organic chemistry, rings are fused if they share two or more atoms.) As such, naphthalene is classified as a benzenoid polycyclic aromatic hydrocarbon (PAH).

Is naphthalene a solid?

Naphthalene is a white crystalline or colorless to brown solid. Naphthalene has a distinct aromatic odor.

What are the physical properties of naphthalene?

What happens when naphthalene balls are exposed to air at room temperature?

Napthalene is an unusual solid that sublimes at room temperature. In other words, it goes straight from the solid phase to the gaseous phase without melting through into liquid phase. Most materials that we are familiar with, like water, go from a solid, ice, to a liquid, water, to a vapor which we call steam.

Does naphthalene sublime at room temperature?

Naphthalene is a solid that sublimes at standard atmospheric temperature with the sublimation point at around 80 °C or 176 °F. At low temperature, its vapour pressure is high enough, 1 mmHg at 53 °C, to make the solid form of naphthalene evaporate into gas.

What is the principle of sublimation?

It is based on the principle that the solids are directly converted into gaseous state without passing through the liquid state.

Why do some substances sublime?

The vapor pressure of any substance increases as temperature rises. Solids too, not just liquids. Sublimation happens when the total pressure of the atmosphere is less than the vapor pressure of compound, and melting has not happened yet because it is not hot enough. Different compounds have different vapor pressures.

Why is naphthalene nonpolar?

Naphthalene is a non-polar molecule. This is because a bond between carbon and hydrogen has an electronegativity value of 0.4 and naphthalene consists... See full answer below.

Why naphthalene is aromatic?

As we are getting a whole number from, 4nπ+2 formula for naphthalene, so naphthalene is aromatic. Therefore, the naphthalene is an aromatic compound according to Huckel's rule because it has 4nπ+2 delocalised electrons. Note: Pi bonds are known as delocalized bonds. Pi bonds cause the resonance.

What is chemical properties of naphthalene?

The substance crystallizes in lustrous white plates, melting at 80.1° C (176.2° F) and boiling at 218° C (424° F). It is almost insoluble in water. Naphthalene is highly volatile and has a characteristic odour; it has been used as moth repellent.

What kind of compound is naphthalene?

Naphthalene is an aromatic hydrocarbon comprising two fused benzene rings.

What type of bonding is present in naphthalene?

The naphthalene ion forms unconventional carbon-based ionic hydrogen bonds with H2O and CH3OH (CH delta+center dot center dot center dot OH2 and CH delta+center dot center dot center dot OHCH3, respectively) which can be extended to hydrogen bonding chains with additional solvent molecules.

Why does naphthalene have a low melting point?

In the case of naphthalene and the amine, clearly the naphthalene can stack nicely and so increase its attractive interaction relative to repulsive ones, whereas the amine is twisted and cannot so easily pack meaning that repulsion can be stronger and attractive interactions weaker (even with dipole) and melting points ...

Is naphthalene a pure substance?

determination of a melting point, eg for naphthalene (pure substance) or candle wax (impure substance)

Is naphthalene is soluble in water?

naphthalene năf´thəlēn˝ [key], colorless, crystalline, solid aromatic hydrocarbon with a pungent odor. It melts at 80°C, boils at 218°C, and sublimes upon heating. It is insoluble in water, somewhat soluble in ethanol, soluble in benzene, and very soluble in ether, chloroform, or carbon disulfide.

Why naphthalene is white in colour?

Why naphthalene balls are pure white when it is made of coal tar coal tar is black. Naphthalene balls are refined and processed to give out pure white colour..

What are mouth balls?

Mothballs are small balls of chemical pesticide and deodorant, sometimes used when storing clothing and other materials susceptible to damage from mold or moth larvae (especially clothes moths like Tineola bisselliella).

Is naphthalene saturated or unsaturated?

Camphor and naphthalene unsaturated and alcohol is saturated. Naphthalene =unsaturated.