Studies on the application of the quinhydrone electrode in formamide. IV. The ionization constants and related thermodynamic quantities of picric acid from E.M.F. measurements at different temperatures
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The e.m.f, of the cell ���������������� Ag-AgCl/KCl(m3), KPic(m2), HPic(m1), QH2-Q|Au in formamide has been measured at 5� intervals over the temperature range 5-45�C. The pKa value of picric acid ranges from 2.19 � 0.12 at 5� to 1.16 � 0.08 at 45�.
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2011 ◽
Vol 483
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pp. 174-179
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