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1、32.双光气分解反应为一级反应。将一定量双光气迅速引入一个280ºC的容器中,751s后测得系统的压力为2.710kPa;经过长时间反应完了后系统压力为4.008kPa。305ºC时重复试验,经 320s系统压力为2.838kPa;反应完了后系统压力为3.554kPa。求活化能。 解:根据反应计量式,设活化能不随温度变化 33.乙醛(A)蒸气的热分解反应如下 518ºC下在一定容积中的压力变化有如下两组数据:纯乙醛的初压100s后系统总压53.32966.66126.66430.531(1)求反应级数,速率常数;otherstaffof
2、theCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterpris
3、esMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand(2)若活化能为,问在什么温度下其速率常数为518ºC下的2倍:解:(1)在反应过程中乙醛的压力为,设为n级反应,并令m = n -1,由于在两组实验中kt相同,故有 该方程有解(用MatLab fzero函数求解) m =0.972,。反应为2级。速率常数 (3)
4、根据Arrhenius公式34.反应中,在25ºC时分别为和,在35ºC时二者皆增为2倍。试求: (1)25ºC时的平衡常数。 (2)正、逆反应的活化能。 (3)反应热。otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthO
5、rganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand 解:(1)
6、 (2) (3)35.在80% 的乙醇溶液中,1-chloro-1-methylcycloheptane的水解为一级反应。测得不同温度t下列于下表,求活化能和指前因子A。0253545 解:由Arrhenius公式,,处理数据如下3.66103.35403.24523.1432-11.4547-8.0503-6.9118-5.8362otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJin
7、gdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,