物理化學一2008級期中雙語

(A)(T)p (B)(p)V (C)(T)V (D)(V)T1- 一個純物質(zhì)的膨脹系數(shù)=V

(VT

=1×1m3·K-1(T為絕對溫度),CpV 與體積V無 與壓力p無 與溫度T無 與V,p,T均有1- 1mol373K，p373K，pW1> Q1>W1< Q1<W1= Q1=W1> Q1<1- ΔS= ΔH= ΔG= ΔU=1- 22222SO3SO21O22二、計算題(共4題472.（12分1.069K，計算3（10Thelatentheatofevaporation(蒸發(fā)潛熱)oftoluene(C7H8)at357Kandatpressureof4.46×104Pais35.2kJ·mol1.Thedensityofthevapouris1.38kg/m3.Avessel(容器)ofthesmallestpossiblevolumetocontain0.10moloftolueneat357Kand4.46×104Paisconnectedtoa3×103m3evacuatedflask(真空瓶)throughbyatubecontainingastop-cock(活塞).Whenthestop-cockisopenedandthesystemisdwithheatuntilthetemperaturereturnsto357K,calculatethe△H、△U、Q、△SandWfortheprocess.4.（10分18gofwater(A)at35℃ismixedwith45gofwater(B)atWhatisthefinaltemperatureassumingthemixingiscarriedoutWhatistheentropychangeofA,Bandtheoverall5．(15分甲烷可作為發(fā)射火箭的，也可用于合成甲醇。已知

H$[HO(l-g),298K44kJmol H$(298K)/kJ c/JK1p32.4+0.21×10-2CO226.4+4.26×10-2 (1)求H$(CH(g298K)，比較將1mol甲烷直接燃燒與將合成1mol甲烷所需的碳和氫 CH(g)+H

劑,

CHOH(g)+H

H

H2(g)+1/2O2(g)

三、問答題(共3題336（8RepresenttheCarnotcycleonatemperature-entropydiagram,andjustifythattheareaenclosedbythecycleisequaltotheworkdone.7.（10分WhatisthestandardmolarGibbsenergychangeat25Cforthereactionbelow?H2(g)+CO2(g)====H2O(g)+CO(g)Giventhefollowingstandardmolarenthalpiesofformationandstandardmolarentropies: