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Which of the following molecules will ha...

Which of the following molecules will have different values of standard molar enthalpy of formation, one calculated using bond energies and other calculated calorimetrically?

A

`C_2H_6 (g)`

B

`1, 3` - butadiene

C

1, 3 -cyclohexadiene

D

`N_2O`

Text Solution

Verified by Experts

The correct Answer is:
B, C
`C_(2)H_(6)` = Has no resonance 1, 3-butadiene`-=` Has resonance `[CH_3 overset(cdots)(-) CH_2 overset(cdots)(-) CH_2 overset(cdots)(-)CH_3]`
`N_2O -=` has no Resonance `[N -= N rarr O] ` 1,3 - cyclohexadiene = Has resonance
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