The compound that undergoes a reaction with EtONa CH3CH2C(Br)(CH3)CH3 is CH3C = CC(CH3)2. When we predict the major organic product formed when the coumpound underoes a reaction with EtONa - CH3CH2C(Br)(CH3)CH3, the prediction will be CH3C = CC(CH3)2. The predited answer in this question is CH3C = CC(CH3)2