--%>
Assignment Help - homework help

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  PSCl3
    
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 + 2PSCl3

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 : Calculating total vapour pressure

    Select the right answer of the question. The vapour pressure of two liquids P and Q are 80 and 600 torr, respectively. The total vapour pressure of solution obtained by mixing 3 mole of P and 2 mole of Q would be: (a) 140 torr (b) 20 torr (c) 68 torr (d) 72 torr

    		•
  • Q : Theory of one dimensional motion For

    For motion in one dimension, the distribution of the molecules over quantum states, speeds, and energies can be deduced.Here we show that the energy of a macroscopic gas sample can be described on the basis of our knowledge of the quantum states allowed to

    		•
  • Q : Organic structure of cetearyl alcohol

    Can we demonstration the organic structure of cetearyl alcohol and state me what organic family it is?

    		•
  • Q : Thermodynamics I) Sulphur dioxide (SO2)

    I) Sulphur dioxide (SO2) with a volumetric flow rate 5000cm3/s at 1 bar and 1000C is mixed with a second SO2 stream flowing at 2500cm3/s at 2 bar and 200C. The process occurs at steady state. You may assume ideal gas behaviour. For SO2 take the heat capacity at constant pressure to be CP/R = 3.267

    		•
  • Q : Molarity of cane sugar solution 171 g

    171 g of cane sugar (C12H22O11)  is dissolved in one litre of water. Find the molarity of the solution: (i) 2.0 M (ii) 1.0 M (iii) 0.5 M (iv) 0.25 M Choose the right answer from above.

    		•
  • Q : HCl is an acid or a base Illustrate is

    Illustrate is HCl an acid or a base ?

    		•
  • Q : Molarity of sodium hydroxide Can

    Can someone please help me in getting through this problem. Determine the molarity of a solution having 5g of sodium hydroxide in 250ml  solution is: (i) 0.5  (ii) 1.0  (iii) 2.0   (d) 0.1Answer: The right answer i

    		•
  • Q : Eutectic Formation In some two

    In some two component, solid liquid systems, a eutectic mixture forms.Consider, now a two component system at some fixed pressure, where the temperature range treated is such as to include formation of one or more solid phases. A simple behavior is shown b

    		•
  • Q : Explain methods for industrial

    The important methods for the preparation of alcohol on large-scale are given below:    

    		•
  • Q : Latent heat of vaporization Normal

    Normal butane (C4H10) is stored as a compressed liquid at 90°C and 1400 kPa. In order to use the butane in a low-pressure gas-phase process, it is throttled to 150 kPa and passed through a vaporizer. The butane emerges from the vaporizer as a

    		•