1. The problem statement, all variables and given/known data Is H3CC(=O)CH2CH3 more likely to act as a Lewis Acid or Lewis Base? Explain your choice. Same for HCO2H (formic acid) 2. Relevant equations N/A 3. The attempt at a solution Since a Lewis Base donates electron pairs, and the oxygen in H3CC(=O)CH2CH3 has two lone pairs, I reasoned that H3CC(=O)CH2CH3 is a Lewis Base. I know HCO2H should be a Lewis Acid because it is formic acid, but I don't know how the molecule would accept an electron pair.