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界面移动法测离子迁移数.doc

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室温22.8℃HCl浓度：0.1017mol/L标准电阻：1Ω 25℃时离子迁移数实验数据: t/s073150186261334375453530571648727I/mA3.543.523.493.483.453.433.423.393.373.363.343.32 7648459249701044112211631238131513551431150615463.313.293.273.263.243.223.213.193.183.173.153.133.12 q(H+)=3.926C Q=5.126C t(H+)=0.7659 25℃时离子迁移数实验数据: t/s018737656264272476083892195810351116I/mA3.533.473.43.353.333.33.293.273.253.243.223.2 11511232130913501431151215493.193.173.153.143.123.113.1 q(H+)=3.926C Q=5.107C t(H+)=0.7687 30℃时离子迁移数实验数据 t/s069143182253325358433506541616693I/mA3.543.523.53.493.483.453.443.423.43.383.363.34 7328098889401009109411321216129813401428151515623.333.313.293.283.263.243.233.223.23.193.183.163.15 q(H+)=3.926C Q=5.200C t(H+)=0.7549 文献值t(H+)=0.831 （0.1000mol/L浓度，可近似看做相等） dr=7.8% 40℃时离子迁移数实验数据 t/s073150192271346382454533572648729I/mA3.553.533.513.53.483.463.453.433.413.43.383.36 7718689279711050113011701252132113811465154915933.353.333.323.313.293.273.263.253.233.223.213.193.18 q(H+)=3.926C Q=5.342C t(H+)=0.7349 50℃时离子迁移数实验数据 t/s078156198278357395537561604685761I/mA3.543.533.513.53.493.473.463.443.433.423.43.39 8068749599981079115711971280135614091496158216233.383.363.353.343.333.313.313.293.283.273.253.243.23 q(H+)=3.926C Q=5.489C t(H+)=0.7152 实验测得温度与迁移数关系 温度/℃25304050迁移数0.765870.7548690.7348730.715232 文献中温度与迁移数关系 温度/℃256090120迁移数0.8310.8050.780.751 表明在一定温度内温度与迁移数呈线性关系。