NEET > Chemistry Class 12 > Phosphorus Halides: Preparation & Properties
Phosphorus Halides: Preparation & Properties Video Lecture - Chemistry Class 12 - NEET
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FAQs on Phosphorus Halides: Preparation & Properties Video Lecture - Chemistry Class 12 - NEET
| 1. How are phosphorus halides prepared? |  |
Ans. Phosphorus halides are typically prepared by the direct combination of phosphorus with the respective halogen element. For example, phosphorus pentachloride (PCl5) can be prepared by reacting phosphorus trichloride (PCl3) with chlorine gas (Cl2) in the presence of a catalyst.
| 2. What are the properties of phosphorus halides? | |
Ans. Phosphorus halides exhibit various properties depending on their composition. Generally, they are highly reactive and can hydrolyze easily in the presence of water. They have a pungent odor and are often colorless, although some may have a yellowish or reddish color. Phosphorus halides are typically soluble in organic solvents and have a tendency to form complexes with Lewis bases.
| 3. What are the uses of phosphorus halides? | |
Ans. Phosphorus halides find various applications in different fields. Phosphorus pentachloride (PCl5) is commonly used as a chlorinating agent and catalyst in organic synthesis. Phosphorus trichloride (PCl3) is utilized in the production of pharmaceuticals, pesticides, and flame retardants. Additionally, phosphorus tribromide (PBr3) is employed in the synthesis of organic compounds.
| 4. Are phosphorus halides toxic? | |
Ans. Yes, phosphorus halides can be toxic and should be handled with caution. They can release toxic fumes when exposed to water or moist air. Inhalation or ingestion of phosphorus halides can cause respiratory irritation, gastrointestinal distress, and other harmful effects. It is essential to follow proper safety measures while working with these compounds.
| 5. Can phosphorus halides react with alcohols? | |
Ans. Yes, phosphorus halides can react with alcohols to form alkyl halides. This reaction is known as the "phosphorus halide-alcohol reaction" or "phosphorus halide substitution reaction." The alcohol molecule replaces one or more halogen atoms in the phosphorus halide compound, resulting in the formation of alkyl halides and inorganic phosphorus compounds.
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Mohit Rajpoot |
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