磷酸滴定实验

滴定管的读数NaOH的用量pH值△V/ml△pH△pH/△V

0.400.00 1.90

2.40 2.00 2.05 2.000.150.0750

4.20 3.80 2.26 1.800.210.1167

6.20 5.80 2.63 2.000.370.1850

7.457.05 3.28 1.250.650.5200

7.607.20 3.560.150.28 1.8667

7.857.45 4.160.250.60 2.4000

8.007.60 5.080.150.92 6.1333

8.257.85 5.530.250.45 1.8000

8.508.10 5.800.250.27 1.0800

8.608.20 5.900.100.10 1.0000

8.708.30 5.980.100.080.8000

9.659.25 6.430.950.450.4737

10.6510.25 6.72 1.000.290.2900

11.7011.30 6.99 1.050.270.2571

12.7012.307.22 1.000.230.2300

13.7013.307.50 1.000.280.2800

13.9013.507.590.200.090.4500

14.1013.707.680.200.090.4500

14.3513.957.750.250.070.2800

14.5514.157.850.200.100.5000

14.8014.407.950.250.100.4000

15.0014.608.090.200.140.7000

15.2514.858.270.250.180.7200

15.4815.088.580.230.31 1.3478

15.6515.259.300.170.72 4.2353

15.9015.5010.070.250.77 3.0800

16.1015.7010.470.200.40 2.0000

16.3515.9510.730.250.26 1.0400

16.5216.1210.890.170.160.9412

16.8516.4511.020.330.130.3939