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Physical Properties of Amines Video Lecture | Chemistry for JEE Main & Advanced
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FAQs on Physical Properties of Amines Video Lecture - Chemistry for JEE Main & Advanced
| 1. What are the physical properties of amines? |  |
Ans. Amines are organic compounds that can exist in either a liquid or solid state at room temperature, depending on their molecular weight. They have a characteristic ammonia-like odor and are typically colorless. Amines are soluble in water to varying degrees, with smaller amines being more soluble than larger ones.
| 2. How do the physical properties of amines differ from those of alcohols? | |
Ans. Amines and alcohols both contain polar functional groups, but amines have lower boiling points than alcohols of similar molecular weight. This is due to the weaker hydrogen bonding present in amines compared to alcohols. Additionally, amines have a stronger odor than alcohols.
| 3. Do amines have a higher or lower boiling point than corresponding hydrocarbons? | |
Ans. Amines generally have higher boiling points than corresponding hydrocarbons of similar molecular weight. This is because amines can form hydrogen bonds with each other, increasing the intermolecular forces and requiring more energy to break the bonds and vaporize the compound.
| 4. How does the chain length of amines affect their physical properties? | |
Ans. As the chain length of amines increases, their boiling points also increase due to the increased surface area for van der Waals forces to act upon. Longer chain amines are typically less soluble in water compared to shorter chain amines.
| 5. Why do primary amines have higher boiling points than tertiary amines? | |
Ans. Primary amines have higher boiling points than tertiary amines because primary amines can form two hydrogen bonds per molecule, while tertiary amines can only form one hydrogen bond per molecule. The presence of additional hydrogen bonds in primary amines leads to stronger intermolecular forces and higher boiling points.
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Dec 18, 2024 Last updated |
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