The effects of temperature on the dissociation equlibrium of ground-state and excited phenol in aqueous solution
Küçük Resim Yok
Tarih
1996
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışmada , fenolün temel ve uyarılmış singlet hal ayrışma dengelerine sıcaklığın etkisi incelendi. Dengelere ilişkin termodinamik parametreler spektroskopik yöntemle saptandı.Temel hal dengesi içi $\Delta H^0 \Delta G^0, \Delta S^0$ değerleri 20 °C de sırasıyla $25.51\pm 1.81$ ; $57.00\pm 0.07$ $kJmol^{-1}$ ; $-0.11\pm 0.01$ $kJmol^{-1}$ olarak hesaplandı. Aynı sıcaklıkta , uyarılmış singlet hal ayrışma dengesine ilişkin olarak bu parametreler $-8.23\pm 1.60$ ; $22.95\pm 0.06$ $kJmol^{-1}$; $-0.ll\pm 0.01$ $kJmol-lK^{-1}$ olarak hesaplandı. Deneme 10 ve 30 °C olmak üzere diğer iki sıcaklıkta tekrar edildi.
In this study, the effects of temperature on the dissociation equilibrium of ground-state and excited singlet-stale phenol were investigated. The thermodynamic parameters of these equilibria were determined of . the ground stale equilibrium spectroscopic methods. $\Delta H^0 \Delta G^0, \Delta S^0$ values of the ground state equlibrium calculated as $25.51\pm 1.81$; $57.00\pm 0.07$ $kJmol^{-1}$; $-0.11\pm 0.01$ $kJmol-lK^{-1}$ respectively at 20°C. These parameters were also calculated for excited, singlet-state dissociation equilibrium as $-8.23\pm 1.60$; $22.95\pm 0.06$ $kJmol^{-1}$; $-0.ll\pm 0.01$ $kJmol-lK^{-1}$ at the same temperature. The experiment was repeated at two other temperature as well (10°C and 30°C).
In this study, the effects of temperature on the dissociation equilibrium of ground-state and excited singlet-stale phenol were investigated. The thermodynamic parameters of these equilibria were determined of . the ground stale equilibrium spectroscopic methods. $\Delta H^0 \Delta G^0, \Delta S^0$ values of the ground state equlibrium calculated as $25.51\pm 1.81$; $57.00\pm 0.07$ $kJmol^{-1}$; $-0.11\pm 0.01$ $kJmol-lK^{-1}$ respectively at 20°C. These parameters were also calculated for excited, singlet-state dissociation equilibrium as $-8.23\pm 1.60$; $22.95\pm 0.06$ $kJmol^{-1}$; $-0.ll\pm 0.01$ $kJmol-lK^{-1}$ at the same temperature. The experiment was repeated at two other temperature as well (10°C and 30°C).
Açıklama
Anahtar Kelimeler
Mühendislik, Ortak Disiplinler
Kaynak
Ege Üniversitesi Fen Fakültesi Dergisi Seri A - B
WoS Q Değeri
Scopus Q Değeri
Cilt
19
Sayı
1
