1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution I can't seem to see how an organic ion with charge -3 is formed. I thought an organic ion will always have a charge of -1? Like sodium ethoxide CH3CH2CO-Na+ ? I know that Na can only react with alcohols and carboxylic acids, so B and D are probably out, though B has carboxylic acid grp and D has alcohol grp in it..