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No.11 (1968/05) >

Title :メチルオレンジの電離定数の測定について。熱力学的諸量の分光化学的研究(第4報)
Title alternative :Study on the Degree of Electric Dissociation in Aqueous Solution of Methylorange.Study on Stoichiometry in Thermodynamics by the Method of Spectra- (4)
Authors :当真, 嗣徳
Authors alternative :Tōma, Shitoku
Issue Date :May-1968
Abstract :Visible absorption spectra were taken between 320 and 440 millimicrons, and between 500 and 600 millimicrons in various pH with the aqueoue solutions (2.5×10^-4mol/l) of methylorange. A dissociation constant K of monobasic acid is determined as follows :(数式については省略) εHA is moleclar absorption coefficient in far acid solution (PH= 1.90) εA^- is in far basic solution (PH=11.70) and ε is in medial. As the concentrations of these solutions are identical, εHA, εA^- and ε are substituted by the optical densities, respectively. The electric dissociation constant of methylorange has been measured as pK = 3.20.
Type Local :紀要論文
Publisher :琉球大学理工学部
URI :http://hdl.handle.net/20.500.12000/23227
Citation :琉球大学理工学部紀要. 理学編 = Bulletin of Science & Engineering Division, University of Ryukyus. Mathematics & natural sciences no.11 p.45 -50
Appears in Collections:No.11 (1968/05)

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