用紫外分光光度计测定萘在硫酸铵水溶液中的活度系数.doc

五、数据记录与处理1、数据记录表1 原始数据记录表A蒸馏水+萘水5mL水+5mL萘饱和液2830.3242750.4712660.436蒸馏水+萘盐5mL1mol/L硫酸铵+5mL萘饱和液2830.2872750.4122660.383水+萘水0.8倍2830.5862750.8512660.7880.6倍2830.4442750.6412660.5930.3倍2830.2322750.3322660.309硫酸铵+萘盐0.2mol.L-12830.4382750.6282660.5840.4 mol.L-12830.2852750.3932660.3680.6 mol.L-12830.2042750.2792660.2630.8 mol.L-12830.1832750.2422660.2301.0 mol.L-12830.1022750.1262660.1221.2 mol.L-12830.1522750.2022660.1922、以萘水溶液的光密度对浓度作图图1 不同波长下光密度-浓度图波长为283nm时Y = A + B * X A0.01953B0.70789K=B=0.70789波长为275nm时Y = A + B * X A0.02016B1.03737K=B=1.03737波长为266nm时Y = A + B * X A0.02097B0.95711K=B=0.957113、根据不同波长下光密度数值求出C0表2KAC0(5mL水+5mL萘饱和液)C(5mL1mol/L硫酸铵+5mL萘饱和液)0.707890.3240.4576980.4054301.037370.4710.4540330.3971580.957110.4360.4555380.4001634、根据不同波长下萘盐溶液光密度求出其浓度C及lg表3283nm 275nm 266nm 盐溶液浓度（mol.L-1）萘溶液浓度（mol.L-1）lg萘溶液浓度（mol.L-1）lg萘溶液浓度（mol.L-1）lg0.20.61874-0.130930.605377-0.124940.61017-0.126930.40.4026050.05570.3788430.0786280.3844910.0736380.60.288180.2009150.2689490.2274170.2747860.219530.80.2585150.2480930.2332820.2892060.2403070.2777581.00.144090.5019450.1214610.5726510.1274670.5531271.20.2147230.32870.1947230.367670.2006040.3561855、在不同波长下以lg对硫酸铵溶液相应浓度作图图2 波长为283nm下lg对硫酸铵溶液相应浓度图Y = A + B * X A0.39235 B 1.53259 K1= B=1.53259图3 波长为275nm下lg对硫酸铵溶液相应浓度图Y = A + B * XA0.3736B1.38833 K2= B=1.38833图4 波长为266nm下lg对硫酸铵溶液相应浓度图Y = A +