wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

H2(g)+12O2(g)H2O(g) ΔH=242kJmol1
Bond energy of H2 and O2 are 436 and 500 kJ mol1 respectively. The bond energy of OH bond is :

A
434 kJ mol1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
464 kJ mol1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
452 kJ mol1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
485 kJ mol1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 464 kJ mol1
H2(g)+12O2(g)H2O(g); ΔH=242 kJ mol1

ΔH= Bond energy of reactants Bond energy of products

ΔH=BHH+12BOO2BOH ;

242 kJ=436+12(500)2BOH

928 kJ=2BOH

BOH=9282

=464 kJ mol1

Hence, the bond energy of O-H bond is 464 kJ/mol.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Thermochemistry
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon