NEET Exam > NEET Videos > Chemistry Class 12 > Physical Properties of Haloalkanes
Physical Properties of Haloalkanes Video Lecture | Chemistry Class 12 - NEET
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FAQs on Physical Properties of Haloalkanes Video Lecture - Chemistry Class 12 - NEET
| 1. What are the physical properties of haloalkanes? |  |
Ans. Haloalkanes are organic compounds that contain halogen atoms, such as chlorine, bromine, or iodine, attached to a carbon chain. Some of the physical properties of haloalkanes include boiling point, solubility, density, and volatility. The boiling points of haloalkanes generally increase with the increase in the size of the halogen atom. They are usually insoluble in water but soluble in organic solvents. Haloalkanes tend to have higher densities compared to water, and their volatility decreases with the increase in the size of the halogen atom.
| 2. How does the size of the halogen atom affect the boiling point of haloalkanes? | |
Ans. The size of the halogen atom in haloalkanes has a significant impact on their boiling points. As the size of the halogen atom increases, the boiling point of the haloalkane also increases. This is because larger halogen atoms have more electron-electron repulsion, which leads to stronger intermolecular forces between the molecules. These stronger intermolecular forces require more energy to break, resulting in a higher boiling point.
| 3. Are haloalkanes soluble in water? | |
Ans. Haloalkanes are generally insoluble in water. This is due to the polar nature of water and the nonpolar nature of most haloalkanes. The carbon-halogen bonds in haloalkanes are relatively nonpolar, and water molecules cannot effectively interact with them. However, haloalkanes are usually soluble in organic solvents such as ethanol or acetone, which have similar nonpolar characteristics.
| 4. How does the density of haloalkanes compare to water? | |
Ans. Haloalkanes typically have higher densities compared to water. This means that they are heavier than an equal volume of water. The higher density is due to the presence of halogen atoms, which are generally heavier than hydrogen and carbon atoms. However, the exact density of a haloalkane depends on the specific halogen atom and the length of the carbon chain.
| 5. How does the volatility of haloalkanes change with the size of the halogen atom? | |
Ans. The volatility of haloalkanes decreases with the increase in the size of the halogen atom. Larger halogen atoms have greater electron-electron repulsion, making it more difficult for the molecules to evaporate. As a result, haloalkanes with larger halogen atoms have lower vapor pressures and are less volatile compared to those with smaller halogen atoms.
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