Sharon Yau, Queensborough Community College, Bayside, NY, Paris Svoronos, Queensborough Community College, Bayside, NY, Pedro Irigoyen, Queensborough Community College, CUNY, Bayside, NY, David M. Sarno, Queensborough Community College, Bayside, NY, and Gopal Subramaniam, Queensborough Community College of The City University of New York, Bayside, NY.
The pKa values for organic acids like acetic acid, dichloracetic acid, triflouoroacetic acid, oxalic acid, maleic acid, etc. were measured with just 0.05 g of the acid in a low Kf solvent like water. The pKa values that are measurable at 0 oC is comparable to the values reported in the literature at 25 oC and complements the method of finding pKa using a pH meter. We also studied the extent of ionization of salts as a function of ionic charge and size using the freezing point depression method. Results obtained using the salts NaCl, Mg(NO3)2, Al(NO3)3, Na2SO4, and Na2CO3 show that ion-pair formation can be observed even at concentrations lower than 1 M.
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Back to The Middle Atlantic Regional Meeting (May 16 - 18, 2007)