why is it that in the resonance structures for acetic acid there isn't any where carbon has a + charge and 2 - charges on each oxygen?

Question

anonymous · Answer

For resonance structure you are not suppose to have negative 2 charges...  if the molecule doesn't have a negative 2 charge to start with. 

acetic acid is CH3COOH meaning the resonance is H-O-C=O  (deprotonation)-> (negative 1 charge) O-C=O <-> O=C-O (negative 1 charge) so the carbon will always have a complete octet and when deprotonation happens the oxygen take up one negative charge from the hydrogen that leaves|dw:1319684227774:dw|