- Messages
- 108
- Reaction score
- 37
- Points
- 38
God bless,thankyou!PCl5-->PCl3+Cl2
bonds broken in PCl5= P-Cl bonds broken= 33o*5=1650
bonds formed in PCl3=330*3 =990
bonds formed in Cl2=240
Bonds broken-bonds formed= 1650 -(990+240)
therefore enthalpy change=+420
You made it seem so easy..