Heat of reaction

RCM (50)

calculate the heat of the foll reaction:

CH3COCH3 + 2O2 → CH3COOH + CO2 + H2O

Bond energies :
C-H = 414.49
C-C = 347.92
C=O = 724.32
O=O = 494.04
O-H = 462.64
C-O = 967.13

Resonance energy :
-COOH = 117.23
CO2 = 138.16

Ans given is not matching with mine :(

10 Answers

1
Philip Calvert ·

anyone ?

24
eureka123 ·

whats the ans ?

24
eureka123 ·

i ma getting
968.89 units

1
Philip Calvert ·

answer givn is -554.33

24
eureka123 ·

anyone solved it ??

1357
Manish Shankar ·

3*414.49+347.92+2*494.04-2*724.32-967.13-462.64-117.23-138.16

This was simple

How did you guys made mistake here

24
eureka123 ·

hmm..feeling ashamed..

anyways thanks sir...

24
eureka123 ·

Sir one dbt....

u wrote..
3*414.49+347.92+2*494.04-2*724.32-967.13-462.64-117.23-138.16

Shouldnt it be 3*462.64 ???becoz there are 3 O-H bonds (1 in carboxylix acid and 2 in water)

1357
Manish Shankar ·

oh I forgot to add that and got the correct answer.

maybe the answer given is wrong

1
Philip Calvert ·

yup the answer given must be wrong.

I thought i was making some mistake that time...

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