--%>

Explain preparation and properties of phosphorus trichloride

It may be prepared by the action of phosphorus on thionyl chloride.

P4 + 8SOCl2  816_Phosphorus trichloride.png  4OCl3 + 4SO2 + 2S2Cl2
    
Lab. Method: it is more conveniently prepared in the laboratory by heating white phosphorus in a current of dry chlorine when phosphorus trichloride distils over.

P4 + 6Cl2  816_Phosphorus trichloride.png  4PCl3

Phosphorus is gently heated in a retort on a water bath and current dry chlorine is passed. Phosphorus trichloride distils over and is collected in a receiver cooled in freezing mixture.

It is redistilled over white phosphorus to remove any phosphorus pentachloride present an impurity.

Properties

    
It is colourless fuming liquid.
    
It reacts violently with water forming phosphorus acid.

PCl3 + 3HOH  816_Phosphorus trichloride.png  H3PO3 + 3HCl
    
It reacts with concentrated H2SO4 forming chlorosulphonic acid.
    
1292_Phosphorus trichloride1.png 

Or, 2H2SO4 + PCl3  816_Phosphorus trichloride.png  HSO3Cl + HPO3 + SO2 + HCl
    
It reacts with organic compounds containing hydroxyl group.

2328_Phosphorus trichloride2.png 
    
It directly combines with Cl2, O2 and S. this indicates that it is an unsaturated compound.

PCl3 + Cl2  816_Phosphorus trichloride.png  PCl5

2PCl3 + O2  816_Phosphorus trichloride.png  2POCl3

PCl3 + S  816_Phosphorus trichloride.png  PSCl
3
    
It acts as a reducing agent.

PCl3 + SO2Cl2  816_Phosphorus trichloride.png  PCl5 + SO2

PCL3 + SO3  816_Phosphorus trichloride.png  POCL3 + SO2

3PCl3 + S2Cl2  816_Phosphorus trichloride.png  PCL5 + 2PSCl
3

It reacts with finely divided metals when hot.

12Ag + 4PCl3  816_Phosphorus trichloride.png  12AgCl + P4

6Na + PCl3  816_Phosphorus trichloride.png  3NaCl + Na2P

 

   Related Questions in Chemistry

  • Q : Describe characteristics of halides and

    Halides characteristics

  • Q : Determining Mole fraction of water Can

    Can someone please help me in getting through this problem. The mole fraction of water in 20% aqueous solution of H2O2 is: (a) 77/68 (b) 68/77 (c) 20/80  (d) 80/20

  • Q : Colligative effect Choose the right

    Choose the right answer from following. Which one of the statements written below concerning properties of solutions, explain a colligative effect: (a) Boiling point of pure water decreases by the addition of ethano (b) Vapour pressure of pure water d

  • Q : What is chemisorption or chemical

    When the forces of attraction existing between adsorbate particles and adsorbent almost of the same strength as chemical bonds, the adsorption is called chemical adsorption. This type of adsorption is also known as chemisorptions. Since forces of attraction existing b

  • Q : Problem on equilibrium constant Ethanol

    Ethanol is manufactured from carbon monoxide and hydrogen at 600 K and 20 bars according to the reaction2 C0(g) + 4 H2(g) ↔ C2H5OH(g) + H2O (g)The feed stream contains 60 mol% H2, 20 m

  • Q : Molar mass what is the equation for

    what is the equation for calculating molar mass of non volatile solute

  • Q : How haloalkanes are prepared from

    Alkyl halides can be prepared from alkanes through substitution and from alkenes through addition of halogen acids or through allylic substitution.    From alkanesWhen alkanes are treated with halogens, chlo

  • Q : Coordination compounds discuss

    discuss practical uses of coordination compounds

  • Q : Molecular Structure type The ionic

    The ionic radii of Rb+ and I- respectively are 1.46 Å and 2.16Å. The very most probable type of structure exhibited by it is: (a) CsCl type  (b) ZnS type  (c) Nacl type  (d) CaF2 type

    Q : Problem based on molarity Select the

    Select the right answer of the question. If 18 gm of glucose (C6H12O6) is present in 1000 gm of an aqueous solution of glucose, it is said to be: (a)1 molal (b)1.1 molal (c)0.5 molal (d)0.1 molal