Bl5_PC1_SS2011_Aufga..

Übung zur Vorlesung Chemische Thermodynamik und Kinetik SS 2011⎧ θ−ΔbH⎫Bafest+ 2Bafl→BaBr2⎪⎪ ⎡−( −758)⎤θ: 2( ) 2( ) 2 ( )1 +ΔHDiss Br fl →Br g → Br g⎢1 + 225 ⎥θ⎪θ⎪Δ H− −=− ⋅ 182affin:Br subHBagas + e →Br⎨+Δ fest →Ba⎬=− ⋅ ⎢+⎥kJ kJ=−325gas2 ⎪ θ2H⎪ ⎢+1469 ⎥molmol+Δ2+ −ion: Bagas→ Ba + 2e⎪⎪ ⎢+−( 1984) ⎥⎪+ΔH⎣ ⎦2+ −⎩ Gitter: Ba +⋅ 2 Br →BaBr⎪2 ⎭θθΔ H − −=Δ U − −+Δ( pV ⋅ ) =−E affin: Brgase Br affin:Br affin−RT⋅+ → gas + e →Br−⋅ 1 RT ⋅θ⎛ kJ ⎞ kJ kJEaff =−Δ H − −+ RT ⋅ =− 325 2.5 327.5affin:Brgas+ e →Br⎜− ⎟+ =⎝ mol ⎠ mol molÜbungsblatt 5 6 SS 2011