分析化學實驗五電導滴定之應用結報
第四組生科 3A 賴庭琇 張文馨
一、 實驗記錄:
NaOH HCl
當量體積 9.97mL 26.01
L 4.20 ms/cm 4.67ms/cm
L’ V=70.0 mL
(70.0+ 9.97) × 4.20 70
L'=4.80 ms/cm
V=70.0+25.0=95.0 mL (95+26.01)× 4.67
95
L'=5.95 ms/cm 當量濃度 KHP=0.3884 g
0.3884
204 =N
NaOH× 9.97 1000 N
NaOH= 0.191 N
N
NaOH= 0.191 N 0.191× 26.01
1000 =N
HCl×25.0 N
HCl= 0.199 N
NH
4OH CH
3COOH
當量體積 14.50 mL 15.5 mL
L 3.19 ms/cm 2.31ms/cm
L’ V=70.0+25.0=95.0 mL (95.0+14.50)× 3.19
95.0 L'=3.677 ms/cm
V=70.0 +25.0=95.0 mL (95.0+15.5)× 2.31
95.0
L'=2.687 ms/cm 當量濃度 N
HCl= 0.199 N
0.199 × 14.50
1000 = N
N H3× 25.0 1000 N
N H3= 0.115 N
N
NaOH= 0.2112 N 0.2112× 15.5
1000 = N
C H3COOH× 25.0 1000 N
C H3COOH= 0.118 N
考試 KHP CH
3COOH
當量體積 (1) 5.57 mL (2)2.52 mL (1) 18.5 mL (2) 24.9
L (1) 2.09ms/cm(2)1.200 ms/cm (1) 2.77ms/cm (2)3.34ms/cm
L’ (1) V=70.0+20.0 = 90.0 mL
L’=2.219
(2) V = 9.09 + 70.0 =79.09 mL
L’=4.264
(1) V =70.0 + 15.0 = 85.0 mL
L’=3.373
(2)V = 20.0 + 70.0 = 90.0 mL
L’=4.264 當量濃度 N
NaOH= 0.2112 N
(1) 0.2112× 5.57 1000 = N
kHP× 20.0
1000 N
kHP=¿ 0.06 N
N
NaOH= 0.2112 N (1) 0.2112 × 18.5
1000 = N
CH3COOH× 15.0
1000
N
CH3COOH=¿ 0.26 N
(2) 0.2112× 2.52 1000 = N
kHP× 9.09
1000 N
kHP=¿ 0.06 N 平均 N
kHP=¿ 0.06 N
(1) 0.2112 × 24.9 1000 = N
CH3COOH× 20.0
1000 N
CH3COOH=¿ 0.26 N 平均 N
CH3COOH=¿ 0.26 N 1. NaOH 滴定 KHP
細滴-NaOH 滴 KHP 刻度 滴入體
積
電導值 ms/cm L'
0.14 0.00 2.57 2.5
7
3.14 3.00 3.06 3.1
9
6.14 6.00 3.59 3.9
0
9.14 9.00 4.05 4.5
7
9.61 9.47 4.13 4.6
9
10.11 9.97 4.20 4.8
0
10.63 10.49 4.39 5.0
5
11.13 10.99 4.61 5.3
3
11.62 11.48 4.81 5.6
0
12.12 11.98 5.02 5.8
8
12.65 12.51 5.23 6.1
6
13.15 13.01 5.49 6.5
1
2. NaOH 滴定 HCl
細滴-NaOH 滴 HCl 刻度 滴入體
積
電導值 ms/cm L'
18.1 0.00 20.90 20.9
0
2
0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 0.001.00 2.00 3.00 4.00 5.00 6.00 7.00
細滴 -NaOH 滴 KHP
V
L'
0.00 5.00 10.00 15.00 20.00 25.00 30.00 0.00
5.00 10.00 15.00 20.00 25.00
細滴 -NaOH 滴 HCl
L'
21.1 3.00 18.48 19.0 6
24.1 6.00 16.32 17.3
5
27.1 9.00 14.24 15.5
9
30.1 12.00 12.30 13.8
5
33.1 15.00 10.49 12.1
5
36.12 18.02 8.73 10.3
9
39.11 21.01 7.14 8.72
42.11 24.01 5.63 7.05
42.61 24.51 5.39 6.78
43.11 25.01 5.14 6.49
43.61 25.51 4.91 6.23
44.11 26.01 4.67 5.95
44.6 26.50 4.70 6.01
45.1 27.00 4.85 6.23
45.6 27.50 5.01 6.46
46.1 28.00 5.16 6.68
46.61 28.51 5.31 6.90
3. HCl 滴定 NH
3細滴-HCl 滴 NH4OH 刻度 滴入體 積
電導值 ms/cm L'
25.80 0.00 0.208 0.20
8
28.80 3.00 0.834 0.86
0
31.80 6.00 1.502 1.59
7
34.80 9.00 2.14 2.34
3
37.80 12.00 2.74 3.08
6
38.30 12.50 2.84 3.21
0.00 2.00 4.00 6.00 8.00 10.00
12.00 14.00
16.00 18.00
20.00 0.000
1.000 2.000 3.000 4.000 5.000 6.000 7.000
細滴 -HCl 滴 NH4OH
V
L'
4
38.80 13.00 2.93 3.33
1
39.30 13.50 3.02 3.44
9
39.80 14.00 3.11 3.56
8
40.30 14.50 3.19 3.67
7
40.83 15.03 3.48 4.03
1
41.32 15.52 3.78 4.39
8
41.82 16.02 4.07 4.75
6
42.32 16.52 4.38 5.14
2
42.82 17.02 4.64 5.47
1
43.32 17.52 4.97 5.88
7
43.90 18.10 5.24 6.23
8
44.40 18.60 5.56 6.64
9
4. NaOH 滴定 CH
3COOH
細滴-NaOH 滴 HOAc 刻度 滴入體 積
電導值 ms/cm L'
26.0 0.00 0.281 0.28
1
29.0 3.00 0.539 0.55
6
32.0 6.00 0.982 1.04
4
35.0 9.00 1.394 1.52
6
38.0 12.00 1.779 2.00
4 0.00 2.00 4.00 6.00 8.00
10.00 12.00
14.00 16.00
18.00 20.00 0.000
0.500 1.000 1.500 2.000 2.500 3.000 3.500 4.000
細滴 -NaOH 滴 HOAc
V
L'
38.5 12.50 1.840 2.08 2
39.0 13.00 1.901 2.16
1
39.5 13.50 1.961 2.24
0
40.0 14.00 2.03 2.32
9
40.5 14.50 2.11 2.43
2
考試:KHP
1.細滴 1-NaOH 滴 KHP 2.細滴 2-NaOH 滴 KHP
細滴 1-NaOH 滴 KHP 刻度 滴入體 積
電導值 ms/cm L'
9.21 0.00 1.12 1.12
0
9.71 0.50 1.189 1.19
6
10.2 0.99 1.257 1.27
1
10.7 1.49 1.352 1.37
4
11.22 2.01 1.458 1.49
0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 0.000
1.000 2.000 3.000 4.000 5.000
細滴 2-NaOH 滴 KHP(9.09mL)
V
L'
1
11.72 2.51 1.533 1.57
6
12.22 3.01 1.631 1.68
6
12.78 3.57 1.742 1.81
1
13.28 4.07 1.811 1.89
3
13.78 4.57 1.892 1.98
8
14.28 5.07 1.973 2.08
4
14.78 5.57 2.09 2.21
9
15.28 6.07 2.28 2.43
4
15.79 6.58 2.50 2.68
3
16.29 7.08 2.68 2.89
1
16.79 7.58 2.90 3.14
4
17.29 8.08 3.09 3.36
7
17.79 8.58 3.26 3.57
1
18.29 9.08 3.46 3.80
9
考試:CH
3COOH
0 1 2 3 4 5 6 7 8 9 10
0.000 1.000 2.000 3.000 4.000
細滴 1-NaOH 滴 KHP(20.0mL)
V
L'
1.細滴 1-NaOH 滴 HOAc (15.0 mL) 2.
細滴 2-NaOH 滴 HOAc (20.0 L)
細滴 1-NaOH 滴 HOAc 刻度 滴入體 積
電導值 ms/cm L'
0.80 0.00 0.329 0.32
9
3.80 3.00 0.597 0.61
8
6.82 6.02 1.081 1.15
8
9.82 9.02 1.522 1.68
4
12.82 12.02 1.942 2.21
7
13.32 12.52 2.01 2.30
6
13.82 13.02 2.06 2.37
6
14.32 13.52 2.13 2.46
9
14.82 14.02 2.20 2.56
3
15.31 14.51 2.26 2.64
6
15.81 15.01 2.31 2.71
8
16.32 15.52 2.38 2.81
5
16.82 16.02 2.44 2.90
0 0.00 5.00 10.00 15.00 20.00 25.00 0.000
1.000 2.000 3.000 4.000 5.000
細滴 1-NaOH 滴 HOAc (15.0 mL)
V
L'
0.00 5.00 10.00 15.00 20.00 25.00 30.00 0.000
1.000 2.000 3.000 4.000 5.000
細滴 2-NaOH 滴 HOAc (20.0 mL)
V
L'
17.32 16.52 2.50 2.98 6
17.82 17.02 2.56 3.07
3
18.30 17.50 2.62 3.15
9
18.80 18.00 2.67 3.23
5
19.30 18.50 2.77 3.37
3
19.80 19.00 2.91 3.56
0
20.30 19.50 3.08 3.78
7
20.80 20.00 3.26 4.02
7