Yes, naphthalene sublimes and undergoes vaporization at temperatures above 80 degrees Celsius rather than decomposing directly. At temperatures exceeding its sublimation point, naphthalene converts from a solid to a gas without passing through a liquid phase.
Yes, a mixture of naphthalene and salt can be separated by sublimation because naphthalene is a solid that sublimates at room temperature, while salt does not. When the mixture is heated gently, naphthalene will transition from a solid to a gas without becoming liquid, leaving the salt behind. The gas can then be cooled to re-condense naphthalene back into a solid form, effectively separating the two components.
If a liquid sample of naphthalene is heated and remains at 218°C until it is completely vaporized, you know that 218°C is the boiling point of naphthalene. This temperature indicates the point at which the liquid naphthalene transitions to its gaseous state under atmospheric pressure. The boiling point is a characteristic property of a substance and helps identify it.
To separate a mixture of sand, table salt, iron filings, and naphthalene, you can use a combination of physical methods. First, use a magnet to attract and remove the iron filings. Next, dissolve the salt in water, filtering out the undissolved sand and naphthalene. Finally, evaporate the water from the salt solution to retrieve the salt, leaving behind the naphthalene, which can be collected through sublimation if heated gently.
The temperature of 218°C at which the liquid sample of naphthalene remains constant during vaporization indicates its boiling point. At this temperature, the vapor pressure of naphthalene equals the atmospheric pressure, allowing it to transition from a liquid to a gas. Therefore, 218°C is the boiling point of naphthalene under the given conditions.
At room temperature, naphthalene is typically in a solid phase. It has a melting point of about 80 degrees Celsius (176 degrees Fahrenheit), so at temperatures below this, it remains solid. When heated above its melting point, naphthalene will transition into a liquid phase.
Many salts do not decompose when heated.
Yes, a mixture of naphthalene and salt can be separated by sublimation because naphthalene is a solid that sublimates at room temperature, while salt does not. When the mixture is heated gently, naphthalene will transition from a solid to a gas without becoming liquid, leaving the salt behind. The gas can then be cooled to re-condense naphthalene back into a solid form, effectively separating the two components.
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Naphthalene can be separated from sodium chloride by sublimation. When the mixture is heated, naphthalene will sublimate, turning from a solid to a gas, and can be collected separately from the solid sodium chloride.
No, sodium chloride does not decompose when heated.
Boiling point.
Napthlene balls sublimates (turns into vapour) when heated...
Materials such as glass and ceramics do not decompose when heated because they are not organic compounds and do not break down into simpler substances under high temperature.
If a liquid sample of naphthalene is heated and remains at 218°C until it is completely vaporized, you know that 218°C is the boiling point of naphthalene. This temperature indicates the point at which the liquid naphthalene transitions to its gaseous state under atmospheric pressure. The boiling point is a characteristic property of a substance and helps identify it.
Solid naphthalene is not heated directly with a Bunsen burner because it can undergo sublimation, meaning it can turn directly from a solid to a gas without passing through the liquid phase. This process can lead to the rapid vaporization and combustion of naphthalene, increasing the risk of fire or explosion.
Sublimation can be used to separate naphthalene from sand. Naphthalene can be heated to change it directly from a solid to a gas, leaving the sand behind. The gas can then be collected and cooled to form solid naphthalene again.
To separate a mixture of sand, table salt, iron filings, and naphthalene, you can use a combination of physical methods. First, use a magnet to attract and remove the iron filings. Next, dissolve the salt in water, filtering out the undissolved sand and naphthalene. Finally, evaporate the water from the salt solution to retrieve the salt, leaving behind the naphthalene, which can be collected through sublimation if heated gently.