磁化率的测定数据处理.doc

磁化率的测定数据处理一、原始数据记录室温： 压强：磁外空管平均值磁内空管平均值磁外样品平均值磁内样品平均值m空管m样品m样品-m空管m/g莫尔氏盐18.321018.3210518.318918.3189025.792425.7924525.954525.95455-0.002150.162100.164257.47140h=11.2cm18.321118.318925.792525.9546硫酸亚铁19.866519.8665019.864519.8665025.954925.9549026.154626.15460-0.002000.199700.201706.08840h=10.6cm19.866519.864525.954926.1546铁氰化钾17.728017.7280017.725217.7252024.315224.3151524.349324.34930-0.002800.034150.036956.58715h=10.9cm17.728017.725224.315124.3493亚铁氰化钾18.811718.8117018.808918.8089025.180026.1800525.172526.17520-0.00280-0.00485-0.002057.36835h=11.1cm18.8117 18.8089 25.180125.17525二、计算莫尔氏盐磁化率，求出磁感应强度；再由标准样品求出其余样品磁化率1、计算莫尔氏盐磁化率 T=26.5=299.65K M莫氏盐=392.14=3.970710-7 m3/kg=1.557110-7m3/mol相应的磁场强度H=20.164259.8392.14410-77.471401.557110-7=2.9386T2、由标准样品求出其余样品磁化率相关数据如下：样品（）/gH/cmm/g莫尔氏盐392.140.1642511.27.47140硫酸亚铁278.030.1997010.66.08840铁氰化钾329.250.0341510.96.58715亚铁氰化钾422.39-0.0048511.17.36835样品摩尔磁化率可由以下公式求的：则有： =0.199700.164257.471406.08840278.03392.1410.611.21.557110-7m3/mol =1.558910-7m3/mol同理有：铁氰化钾=0.034150.164257.471406.58715329.25392.1410.911.21.557110-7m3/mol =0.300110-7m3/mol亚铁氰化钾=-0.004850.164257.471407.36835422.39392.1411.111.21.557110-7m3mol =-0.0497710-7m3/mol3、根据m计算样品的未成对电子数a、硫酸亚铁由得：m=3mKTNA410-7 =31.558910-71.38066210-23299.656.021023410-7J2/T2=5.057310-23J2/T2b、铁氰化钾m=3mKTNA410-7 =30.300110-71.38066210-23299.656.021023410-7J2/T2=2.218910-23J2/T2 又因为、B=9.27407810-24，所以：当n=1时，m=1.606310-23 J2/T2；当n=2时，m=2.623110-23 J2/T2；当n=3时，m=3.591810-23 J2/T2；当n=4时，m=4.543410-23 J2/T2；当n=5时，m=5.486610-23 J2/T2。由此可以看出:当n=4时，m=4.543410-23 J2/T2，接近m=5.057310-23J2/T2，则硫酸亚铁的未成对电子数是4。当n=2时，m=2.623110-23 J2/T2，