Biacetyl and acetoin are added to margarine to make it taste more like butter.
Complete the Lewis structures, predict values for all C–C–O bond angles, and give the hybridization of all the carbon atoms in these two compounds. Must the four carbons and two oxygens in biacetyl lie in the same plane? How many σ bonds and how many π bonds are there in biacetyl and acetoin?
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