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It is insoluble in water, somewhat soluble in ethanol, soluble in benzene, and very soluble in ether, chloroform, or carbon disulfide. Naphthalene is obtained from coal tar, a byproduct of the coking of coal.
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Why is naphthalene more soluble in petroleum ether than in water?
Naphthalene is more soluble in petroleum ether than in water because naphthalene is nonpolar and petroleum ether is also nonpolar. Like dissolves like, so nonpolar solvents like petroleum ether are better able to dissolve nonpolar solutes like naphthalene. Water is a polar solvent and does not interact well with nonpolar solutes like naphthalene, resulting in low solubility.
Why is a water bath used to heat the solid naphthalene?
A water bath is used to heat solid naphthalene to ensure uniform and controlled heating. This method prevents localized overheating that could lead to decomposition or degradation of the naphthalene. Additionally, the temperature of the water bath can be easily regulated, allowing for precise temperature control during the melting process. This results in a more consistent and safe melting of the solid naphthalene.
What happens if you mix naphthalene and glycerin?
When naphthalene and glycerin are mixed, naphthalene, a solid hydrocarbon, does not dissolve well in glycerin, which is a polar liquid. Instead, the naphthalene may float on top or form a separate layer, as it is less dense than glycerin. Additionally, the two substances do not chemically react, so the mixture remains physically distinct without forming a new compound. The result is a heterogeneous mixture with naphthalene crystals suspended in the glycerin.
How can we separate naphthalene from sand?
One way is to dissolve the ammonium chloride in water, then recover the ammonium chloride by evaporation; the naphthalene will not dissolve in water in any substantial quantity.
Why water bath is used to heat naphthalene?
To stop it from blowing up.
Do naphthalene dissolves in water?
Naphthalene is not very soluble in water, meaning it does not dissolve easily in water. The solubility of naphthalene in water is very low.
What tool can be used to measure the naphthalene in water?
Gas Chromatography is an excellent technique for measuring naphthalene in water.
What happens when naphthalene is added to water?
Naphthalene is sparingly soluble in water, so when added to water it will partially dissolve but will mostly float on the surface. Naphthalene is volatile, so it will slowly vaporize into the air.
Is naphthalene soluble to ethyl alcohol?
Naphthalene is said to be somewhat soluble in ethyl alcohol (ethanol). It is insoluble in water and very soluble in ether, chloroform, or carbon disulfide.
Why does paradichlorobenzene dissolve in naphthalene?
Paradichlorobenzene dissolves in naphthalene because they are both nonpolar compounds. Nonpolar substances are soluble in nonpolar solvents like naphthalene due to similar attractive forces between molecules, known as London dispersion forces. This allows paradichlorobenzene to mix and dissolve evenly in naphthalene.
Is naphthalene soluble in water or hexane?
Naphthalene is strictly non-polar with a structure similar to two benzene rings linked together. Similarly ether is also highly non-polar. Since like dissolves like naphthalene is soluble in ether.
What would be a good solvent at room temperature for naphthalene C10H8 Water ethanol or pentane?
Pentane would be a good solvent at room temperature for naphthalene (C10H8) as it is non-polar and can dissolve non-polar compounds like naphthalene effectively. Water and ethanol are polar solvents and would not dissolve naphthalene well.
How do you account for the observed solubility of naphthalene and sodium chloride in water and ether based on the nature of the bonds that exist in them?
The reason why naphthalene can be dissolve in ether and not in water is because of their polarity. Naphthalene is a non-polar molecule. so it can only dissolve with a non-polar molecule.
Which is more soluble in water sodium carbonate naphthalene or calcium carbonate?
Sodium carbonate is more soluble in water than calcium carbonate and naphthalene. Sodium carbonate is a water-soluble salt, while calcium carbonate is sparingly soluble in water, and naphthalene is insoluble in water.
What is the solubility of napathalene in water and ethanol?
Naphthalene is insoluble in water but soluble in ethanol. In water, naphthalene forms a suspension due to its non-polar nature, while in ethanol, it dissolves because of the similar polarities of the solute and solvent.
Why is naphthalene more soluble in petroleum ether than in water?
Naphthalene is more soluble in petroleum ether than in water because naphthalene is nonpolar and petroleum ether is also nonpolar. Like dissolves like, so nonpolar solvents like petroleum ether are better able to dissolve nonpolar solutes like naphthalene. Water is a polar solvent and does not interact well with nonpolar solutes like naphthalene, resulting in low solubility.
How can you separate a mixture of naphthalene and ammonium chloride?
One way is to slurry the solid mixture with water. The ammonium chloride will dissolve and the naphthalene will not. Ammonium chloride can then be recovered by evaporating the water solution of it that is formed.
