Groups with a Carbon-Oxygen double Bond(carbonyl groups) Aldehyde: one hydrogen bonded to=o Ketone: two C's bonded to the c=o Carboxylic acid -OH bonded to the c=o Ester:c-o bonded to the c=o Amid e C-n bonded to the c=o Acid chloride. cl bonded to the c=o Carbonyl C has partial positive charge(8+) Carbonyl o has partial negative charge(8-)Groups with a Carbon–Oxygen Double Bond (Carbonyl Groups) • Aldehyde: one hydrogen bonded to C=O • Ketone: two C’s bonded to the C=O • Carboxylic acid: ¾OH bonded to the C=O • Ester: C-O bonded to the C=O • Amide: C-N bonded to the C=O • Acid chloride: Cl bonded to the C=O • Carbonyl C has partial positive charge (d+) • Carbonyl O has partial negative charge (d-)