Why naphthalene has a lower melting point than sodium chloride?

Why naphthalene has a lower melting point than sodium chloride?

Sodium chloride has higher melting point than naphthalene. this is because sodium chloride has electrostatic forces of attraction and thus this tends to hold the the sodium and chloride ions very strongly and thus responsible for the high melting point.

What is the melting point of naphthalene?

176.5°F (80.26°C)
Naphthalene/Melting point

Does sodium iodide have a high melting point?

1,222°F (661°C)
Sodium iodide/Melting point

What is the difference between sodium chloride and naphthalene?

Answer: The mixture of naphthalene and sodium chloride can be separated by the process of sublimation as naphthalene is a sublime, i.e. it turns into vapour without changing in liquid and its vapour change into solid without changing into liquid, while sodium chloride is not a sublime.

How the melting point of naphthalene was determined?

Hold a thermometer with its bulb in the naphthalene. Use a small flame to heat the test-tube gently and watch the thermometer reading. To find the melting range, note the temperature when the naphthalene melts. Leave to cool and note the temperature when the naphthalene solidifies.

Why naphthalene has higher boiling point?

Naphthalene only has London dispersion forces but since it is a large flat molecule; the London dispersion forces are large making it have a higher boiling point than acetic acid (which is small) even though acetic acid is able to H-bond.

Why does sodium iodide have a high melting point?

It takes a lot of energy to overcome the strong electrostatic forces of attraction between oppositely charged ions, so ionic compounds have high melting and boiling points.

Why does sodium bromide have a high melting point than sodium and sodium iodide?

Despite metallic bonding being a strong type of bonding, ionic bonding is stronger in this case. This means that more energy (and higher temperatures) are needed to melt the sodium bromide in comparison to sodium on its own, hence Sodium Bromide has a higher melting point.

How will you distinguish between naphthalene and sugar?

As Naphthalene undergoes sublimation, we use sublimation process. On condensing naphthalene can be separated. Salt and sugar are dissolved in water . Evaporation or distillation process can be adopted.

What kind of solid is naphthalene in molten form?

(NCI05) Naphthalene appears as a white crystalline volatile solid with a strong coal-tar odor. The solid is denser than water and insoluble in water. Burns, but may be difficult to ignite. . In the molten form it is very hot.

How much does naphthalene weigh in PubChem CID 931?

PubChem CID 931 Synonyms naphthalene 91-20-3 Naphthalin Naphthene Molecular Weight 128.17 Dates Modify 2021-07-03 Create 2005-03-26

What are the effects of exposure to naphthalene?

Naphthalene. Naphthalene is obtained from either coal tar or petroleum distillation and is primarily used to manufacture phthalic anhydride, but is also used in moth repellents. Exposure to naphthalene is associated with hemolytic anemia, damage to the liver and neurological system, cataracts and retinal hemorrhage.

Why does sodium chloride have a high melting point?

Sodium chloride has a high melting point because of the strong electrostatic attraction between its positive and negative ions; this requires more heat energy to overcome. All ionic compounds have high melting points for this reason. The difference in melting points for ionic compounds can be…