What is the melting and boiling point 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.

At what temperature does naphthalene become solid?

From Point F to G, naphthalene exists as liquid and solid. At Point H, naphthalene exists as solid. 2. The freezing point of naphthalene is 80.0 °C.

Does naphthalene burn or melt?

Naphthalene is a white solid that evaporates easily. It is also called mothballs, moth flakes, white tar, and tar camphor. When mixed with air, naphthalene vapors easily burn. Fossil fuels, such as petroleum and coal, naturally contain naphthalene.

Are naphthalene balls melting?

The melting point of naphthalene is 80.3 ∘C And fortunately these things are cheap. You can pick them up in supermarkets, and fill the pockets of your best coat, suit, dress etc.

Why is naphthalene melting point high?

Naphthalene is an extremely simple and nonpolar compound, yet it has a significantly higher melting point than diphenylamine (a similar enough structure that is not only heavier, but has a dipole-inducing amine) and water (famously super polar). What’s going on here? High symmetry, and molecular mass, pi-stacking.

Why naphthalene has a low melting point?

Explanation: Chemical formula of naphthalene is and it is a covalent compound as it contains two different non-metals. And, it is known that in covalent compounds there exist weak intermolecular forces of attraction.

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 …

Does naphthalene melt or sublime?

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.

How the melting point of naphthalene was determined?

Put 2 cm of naphthalene flakes in a test-tube. 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.

What is the triple point of naphthalene?

Naphthalene (C 10H 8) is the key ingredient in mothballs. It has normal melting and boiling points of 81°C and 218°C, respectively. The triple point of naphthalene is 80°C at 1000 Pa.

Why does naphthalene have a higher melting point than wax?

Why does naphthalene have a higher melting point? Naphthalene has a higher melting point than biphenyl because naphthalene is a polar compound while biphenyl is a non-polar compound. It is because polar compounds have strong intermolecular forces. Why does stearic acid have a high melting point? Both are saturated fatty acids but stearic acid (C18) ]

Why does naphthalene HS a high melting point?

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.

What are the dangers of naphthalene?

f Inhaling Naphthalene can irritate the nose and throat. f High exposure to Naphthalene can cause headache, fatigue, confusion, tremor, nausea and vomiting. f Exposure to Naphthalene may cause a skin allergy. fNaphthalene may damage the liver and kidneys. fRepeated high exposure may cause anemia (low blood count). fNaphthalene is a COMBUSTIBLE SOLID. It may also be

What is the freezing point of naphthalene?

The freezing point of naphthalene is 80.0 °C. 3. There is an increase from Point E to F and also from Point G to H because when the matter is cooled, heat energy is released. The particles lose their kinetic energy and vibrate slower. 4.