caa a22 4500 477139426 CHVBK 20180405111728.0 cr unu---uuuuu 170330e19970401xx s 000 0 eng 10.1007/BF02767677 doi (NATIONALLICENCE)springer-10.1007/BF02767677 Spectrophotometric determination of the acid dissociation constants for cacodylic acid and p-Nitrophenol at elevated temperatures [Elektronische Daten] [Tae-Wook Shin, Keon Kim, In-Ja Lee] Using 2.5-dinitrophenol as an optical indicator, the pKa of cacodylic acid were spectrophotometrically determined at elevated temperatures under saturation vapor pressures. The result is pKa = -26.41 + 1296/T + 4.973 InT whereT is in Kelvin. In a similar way, the pKa ofp-nitrophenol were obtained up to 200‡C giving pKa = -24.82 + 2135/T + 4.353 InT From these results, several thermodynamic functions of cacodylic acid andp- nitrophenol were calculated. Plenum Publishing Corporation, 1997 pH nationallicence pKa nationallicence 2,5-dinitrophenol nationallicence cacodylic acid nationallicence p -nitrophenol nationallicence acid dissociation constant nationallicence thermodynamic function nationallicence Shin Tae-Wook Department of Chemistry, Dongguk University, Kyongju-Si, 780-714, Kyongbuk, Korea aut Kim Keon Department of Chemistry, Korea University, 136-701, Seoul, Korea aut Lee In-Ja Department of Chemistry, Dongguk University, Kyongju-Si, 780-714, Kyongbuk, Korea aut Journal of Solution Chemistry Springer US 26/4(1997-04-01), 379-390 0095-9782 26:4<379 1997 26 10953 https://doi.org/10.1007/BF02767677 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02767677 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shin Tae-Wook Department of Chemistry, Dongguk University, Kyongju-Si, 780-714, Kyongbuk, Korea aut NATIONALLICENCE 700 1- Kim Keon Department of Chemistry, Korea University, 136-701, Seoul, Korea aut NATIONALLICENCE 700 1- Lee In-Ja Department of Chemistry, Dongguk University, Kyongju-Si, 780-714, Kyongbuk, Korea aut NATIONALLICENCE 773 0- Journal of Solution Chemistry Springer US 26/4(1997-04-01), 379-390 0095-9782 26:4<379 1997 26 10953 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer