Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

Calculate the heat of formation of water?
Asked by | 26 Feb, 2008, 04:07: PM
Expert Answer

H reacts with oxygen to form water. Calculate the heat of formation of water?

The bond energy of H-H ,  O=O and O-H are 435KJ 495KJ 460KJ respectively

435 + 1/2 495 = 682.5 is the energy absorbed to break existing bonds in reactants and 2x460=920 is the energy evolved in formation of 2 O-H bonds in water. heat of formation of water= -237.5kJ

Answered by | 02 Mar, 2008, 07:09: PM
CBSE 10 - Chemistry
Asked by kashviS.shah | 14 Sep, 2022, 11:27: PM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by 83dimplejain29 | 01 Sep, 2022, 03:04: PM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by ten.foundation | 29 Aug, 2022, 07:53: PM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by Shadm4242 | 20 Aug, 2022, 12:35: PM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by Sunita | 21 Jul, 2022, 10:18: AM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by labheshvaidya | 20 Jul, 2022, 10:59: AM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by ansheera3236 | 11 Jul, 2022, 05:05: PM
ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by saharupa28041 | 30 Jun, 2022, 11:29: PM
ANSWERED BY EXPERT
Season Break Offer!
Get 60% Flat off instantly.
Avail Now
×