Why is the Average Bond Enthalpy of O2 Different from its Formation Enthalpy?

  • Thread starter Thread starter daivinhtran
  • Start date Start date
  • Tags Tags
    Bond Gas Oxygen
Join the discussion
Registration is free. Start your own thread to ask a follow-up.
Sign up Log in
1 reply · 3K views
daivinhtran
Messages
68
Reaction score
0
why is average bond enthalpy of O2 is 495...But the formation enthalpy of O2 is 0 ??
Why are they different??
 
Chemistry news on Phys.org

Discussion

See the definition of formation of Enthalpy.
 

Similar threads

Why is the MO theory for O2 different from VB theory?
  • richardlhp
  • · Replies 7 ·
  • Chemistry
Replies
7
Why is lattice formation enthalpy subtracted in Born-Haber cycles?
  • aleksbooker
  • · Replies 2 ·
  • Biology and Chemistry Homework Help
Replies
2
Calculating S-F Bond Enthalpy from Standard Enthalpy of Formation Values
  • zorro
  • · Replies 2 ·
  • Biology and Chemistry Homework Help
Replies
2
Why is the enthalpy of formation of ammonia negative?
  • chikis
  • · Replies 10 ·
  • Biology and Chemistry Homework Help
Replies
10
Standard enthalpy of formation of C(g) from graphite
  • mcfaker
  • · Replies 1 ·
  • Biology and Chemistry Homework Help
Replies
1
Why is the Enthalpy of the NO2 to N2O4 Reaction Exothermic?
  • Qube
  • · Replies 2 ·
  • Biology and Chemistry Homework Help
Replies
2
Energy to dissociate an H2 molecule from formation enthalpy
  • pentazoid
  • · Replies 1 ·
  • Advanced Physics Homework Help
Replies
1
Finding S4N4 structure and bond enthalpy with equal bond lengths
  • needhelpperson
  • · Replies 2 ·
  • Introductory Physics Homework Help
Replies
2