In order to answer such questions, the stability of each resulting conjugate base should be considered; the more stable this is, the stronger the parent acid.
For enolates, the greater the degree of delocalization of charge, (i.e., the more resonance structures that can be drawn), the stronger the acid. Therefore, proton C is more acidic than B. However, the carboxylate arising from loss of E is the most stable as the charge is shared between two electronegative oxygen atoms (of the CO2– group). Proton E is the strongest acid.
The Medical College Admissions Test (MCAT) is a test administered by the Association of American Medical Colleges (AAMC). The test is designed to test your knowledge in three specific sections; physical sciences such as physics and general chemistry, biological sciences and organic chemistry, and verbal reasoning.
How Should I Study?
The MCAT is a rigorous exam that requires months of planning in order to achieve a great score. It is recommended that you begin your study schedule 3 months prior to your exam date. In addition to answering our practice MCAT questions each day, read this article regarding studying for the MCAT from home.
Register for the MCAT.
The first question many people ask is, “when should I take the MCAT?” The general guideline is to take the MCAT the year before you plan to enter medical school. For example, the class of 2018 should take the MCAT sometime before or during the spring/summer of 2013. Your basic science coursework should be complete by this point.