Piridina: Perbedaan antara revisi

Piridina adalah cairan tak berwarna yang mendidih pada suhu 115,2°C dan membeku pada suhu −41,6°C. Berat jenisnya, 0,9819 g/cm³, sangat dekat dengan [[air]], dan [[indeks refraktif]] 1,5093 pada [[panjang gelombangwgelombang]] 589&nbsp;nm dan suhu 20°C.<ref name=lide3448>[[#Lide|Lide]], p. 3–448</ref> Penambahan sampai 40&nbsp;mol% air pada piridina perlahan-lahan mengurangi titik bekunya dari −41.6°C ke −65.0°C.<ref name=str/> [[Momen dipol elektrik]] molekular 2.2 [[debye]].<ref name=roempp>{{cite book|work=Thieme Chemistry|title=RÖMPP Online – Version 3.5|publisher=Georg Thieme |place=Stuttgart|year=2009}}</ref><!-- Pyridine is [[diamagnetism|diamagnetic]] and has a [[Magnetic susceptibility|diamagnetic susceptibility]] of −48.7 × 10⁻⁶ cm³·mol⁻¹.<ref>[[#Lide|Lide]], p. 3–673</ref> The [[standard enthalpy of formation]] is 100.2 kJ·mol⁻¹ in the liquid phase<ref name=lide528>[[#Lide|Lide]], p. 5-28</ref> and 140.4 kJ·mol⁻¹ in the gas phase. At 25&nbsp;°C pyridine has a [[viscosity]]<ref>[[#Lide|Lide]], p. 6-211</ref> of 0.88 mPa/s and [[thermal conductivity]] of 0.166 W·m⁻¹·K⁻¹.<ref>[[#Lide|Lide]], p. 6–221</ref><ref name="GESTIS"/> The [[enthalpy of vaporization]] is 35.09 kJ·mol⁻¹ at the [[boiling point]] and normal pressure.<ref name="Majer Svoboda">Majer, V. and Svoboda, V. (1985). ''Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation'', Blackwell Scientific Publications, Oxford, ISBN 0-632-01529-2</ref> The [[enthalpy of fusion]] is 8.28 kJ·mol⁻¹ at the [[melting point]].<ref>{{cite journal|last1=Domalski|first1=Eugene S.|last2=Hearing|first2=Elizabeth D.|title=Heat Capacities and Entropies of Organic Compounds in the Condensed Phase|journal=Journal of Physical and Chemical Reference Data|volume=25|pages=1|year=1996|doi=10.1063/1.555985|bibcode = 1996JPCRD..25....1D }}</ref>