Question

Among phosphorus trihalides which halides are generated in situ

Answer 1

Answer:

The general method entails adding the phosphorus halide (usually PCl3, but PBr3 has also been used) to the Grignard reagent (usually in slight excess....

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Answer 2

Among phosphorus trihalides which halides are generated in $PX3$ and $PX5$

Explanation:

Phosphorus Halides:

Phosphorus Trichloride and Phosphorus Pentachloride are two types of phosphorus halides. Phosphorus can be found in two different halides. $PX3$ and $PX5$ The most prevalent phosphorus halides are phosphorus pentachloride ($PCl5$) and phosphorus trichloride ($PCl3$).

Phosphorus Trichloride:

• Phosphorus trichloride is produced industrially by reacting chlorine with a white phosphorus solution in phosphorus trichloride and continuously removing $PCl3$ as it forms.
• It may be more convenient to use the less harmful red phosphorus in the laboratory.

Phosphorus pentachloride:

• However, chloride is the most prevalent phosphorus halide. The nature of these chlorides is usually covalent.