A strong acid must be able to provide large numbers of hydrogen ions when dissolved in water, (H+(aq)). Thus a strong acid must dissociate (break into ions) completely upon dissolving in water to provide as many H+(aq) ions as possible.
All these compounds are water soluble, but only CH3CH2COOH and H2SO4 can provide H+(aq) ions. CH3CH2COOH or propanoic acid, is only partially dissociates (<1%) in water and is thus a weak acid. H2SO4 or sulfuric acid, completely (100%) dissociates into sulfate ions and hydrogen ions upon dissolving in water and is thus the strong acid of the group.
CH3CH2OH – ethanol does not dissociate, but stays as a complete molecule in solution.
NH4OH – ammonium hydroxide, a weak base which partially dissociates to give few hydroxide OH–(aq) ions.
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.