Final answer:
To draw the conjugate base of (CH3)2C=OH, remove an H+ from the oxygen, resulting in (CH3)2C=O- with a negative charge on the oxygen and its non-bonding electrons.
Step-by-step explanation:
To draw the conjugate base for the acid (CH3)2C=OH, start by identifying the acidic hydrogen atom in the compound, which is the hydrogen attached to the oxygen. Removal of this hydrogen atom will result in the conjugate base. Once this H+ is removed, the oxygen atom will have a full negative charge.
The structure of the conjugate base will be (CH3)2C=O-, with the negative charge represented on the oxygen atom. Make sure to include any non-bonding electrons, which in this case, would be the lone pair of electrons on the negatively charged oxygen atom. The negative charge indicates that the oxygen atom has an additional pair of electrons after losing the proton.