MHT CET202016 Oct 2020Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual
Which of the following reaction proves the chlorinating property of phosphorus pentachloride?
Options
- A( PCl ₅+ H ₂ O POCl ₃+2 HCl )
- B(2 PCl ₅+ Sn SnCl ₄+2 PCl ₃ )
- C( PCl ₅ PCl ₃+ Cl ₂ )
- D( P ₄+10 Cl ₂ 4 PCl ₅ )
Correct answer
D. ( P ₄+10 Cl ₂ 4 PCl ₅ )
Step-by-step solution
PCl ₅ PCl ₃+ Cl ₂ The trigonal bipyramidal structure of phosphorus pentachloride, in which the P - Cl (axial) bonds are somewhat larger than the P - Cl (equatorial) bonds, renders the molecule particularly unstable. It serves as a chlorinating agent when it dissociates, releasing two chlorine atoms from the axial bond. PCl ₅ PCl ₃+ Cl ₂ act as chlorinating agent