Study of Acidity Constants of 3-, 4-, 5-, and 6-Chloro-<I>o</I>-toluidinium Ions in Aqueous Solution and Related Thermodynamic Quantities. I

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概要

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• The acidity constants of anilinium, simple and 3-, 4-, 5-, and 6-chloro-<I>o</I>-toluidinium ions have been studied at seven different temperatures by pH metry in aqueous solution and correlated using the relation ln<I>K</I>=<I>A</I>+<I>BT</I>+<I>CT</I><SUP>2</SUP>. The values of <I>ΔG</I>, <I>ΔH</I>, <I>ΔS</I>, and <I>ΔC<SUB>p</SUB></I> have been calculated at different temperatures. The possibility of the additivity in the thermodynamic quantities of these disubstituted anilinium ions has been examined. Hammett type equation has been developed to correlate the acidity constant of these ions at 25°C. Attempt has been made to explain the trends in the thermodynamic quantities of these ions in terms of polar, steric, and solvent effects.

• 公益社団法人 日本化学会の論文

著者

• Patel S.

  Department Of Mathematics Tohoku Pharmaceutical University

• Gandhi A.

  Department of Chemistry, Sardar Patel University

• Patel S.

  Department of Chemistry, Sardar Patel University

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• Study of Acidity Constants of 3-, 4-, 5-, and 6-Chloro-o-toluidinium Ions in Aqueous Solution and Related Thermodynamic Quantities. I

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