Question

Why are organic compounds thetmallt insatable?

Answer 1

`"Why are organic compounds that melt unstable?"`

Explanation:

Are you sure that all such compounds are unstable? This would not be my conclusion. Perhaps you would clarify the question?

Alternatively....

`"why are organic compounds THERMALLY unstable?"`...this makes a lot more sense`"..."`consider a saturated organic molecule `C_nH_(2n+2)`...and this could be completely combusted to give carbon dioxide and water...

`C_nH_(2n+2) +(3n+1)/2*O_2(g) rarr nCO_2(g) + (n+1)H_2O+Delta`

And here, both entropy and enthalpy are DOWNHILL; i.e. combustion gives strong `C=O` and `O-H` bonds...and such combustion releases energy....