|
Before
Heating:
Experiment
1
Data
Table 1: Water Content of 10mL of Jatropha Oil
|
Trial
Number
|
Mass
of
Beaker
(g)
|
Mass
of
Solution
(g)
|
Mass
of Solution after Evaporation (g)
|
Difference
in Weights (g)
|
Water
Content (%)
|
|
1
|
31.88
|
8.94
|
8.83
|
0.11
|
1.25
|
|
2
|
29.57
|
8.38
|
8.36
|
0.02
|
0.23
|
|
3
|
29.22
|
9.41
|
9.39
|
0.02
|
0.21
|
|
Average
|
N/A
|
8.91
|
8.86
|
0.05
|
0.22
|
*Trial 1 was considered an outlier and thus, is not
represented in the mean water content calculation.
Data
Table 2: Iodine Value of 10mL of Jatropha Oil
|
Trial
Number
|
Mass
of Flask (g)
|
Mass
of Oil (g)
|
Iodine
Value (mg of iodine/g of oil)
|
|
1
|
98.33
|
1.86
|
10.63
|
|
2
|
80.51
|
1.98
|
8.97
|
|
3
|
98.33
|
1.93
|
9.80
|
|
Average
|
N/A
|
1.92
|
9.78
|
Titration
|
Burette
solution
|
Sodium
thiosulphate
|
|
Flask
solution
|
Oil
+ Potassium Iodide solution
|
|
Indicator
|
Starch
|
|
Titration
|
Trial 1
|
Trial 2
|
Trial 3
|
|
Final reading (mL)
|
32.7
|
14.0
|
28.9
|
|
Initial reading (mL)
|
17.1
|
0.0
|
14.0
|
|
Volume
added (mL)
|
15.6
|
14.0
|
14.9
|
|
Mean
titre (mL)
|
14.8
|
Data
Table 3: Acid Value of 10mL of Jatropha Oil
|
Trial
Number
|
Mass
of Flask (g)
|
Mass
of Oil (g)
|
Acid
Value (mg of Sodium Hydroxide/g of oil)
|
|
1
|
124.18
|
0.82
|
19.51
|
|
2
|
93.58
|
0.85
|
8.94
|
|
3
|
124.17
|
0.90
|
8.00
|
|
Mean
|
N/A
|
0.86
|
8.60
|
*Trial 1 was considered an outlier and thus, is not
represented in the mean acid value calculation.
Titration
|
Burette
solution
|
Sodium Hydroxide
|
|
Flask solution
|
Oil in Alcohol
|
|
Indicator
|
Phenolphthalein
|
|
Titration
|
Trial 1
|
Trial 2
|
Trial 3
|
|
Final reading (mL)
|
4.0
|
5.9
|
7.7
|
|
Initial reading (mL)
|
0.0
|
4.0
|
5.9
|
|
Volume
added (mL)
|
4.0
|
1.9
|
1.8
|
|
Mean
titre (mL)
|
1.85
|
*Trial 1 was considered an outlier and thus, is not
represented in the mean titre calculation.
After
Heating:
Data
Table 4: Iodine Value of 10mL of Jatropha Oil
|
Trial
Number
|
Mass
of Flask (g)
|
Mass
of Oil (g)
|
Iodine
Value (mg of iodine/g of oil)
|
|
1
|
90.39
|
2.21
|
13.09
|
|
2
|
86.54
|
2.13
|
12.51
|
|
3
|
90.41
|
2.04
|
12.63
|
|
Average
|
N/A
|
2.13
|
12.75
|
Titration
|
Burette
solution
|
Sodium
thiosulphate
|
|
Flask
solution
|
Oil
+ Potassium Iodide solution
|
|
Indicator
|
Starch
|
|
Titration
|
Trial 1
|
Trial 2
|
Trial 3
|
|
Final reading (mL)
|
43.0
|
32.0
|
20.5
|
|
Initial reading (mL)
|
20.2
|
11.0
|
0.2
|
|
Volume
added (mL)
|
22.8
|
21.0
|
20.3
|
|
Mean
titre (mL)
|
21.4
|
Data
Table 5: Acid Value of 10mL of Jatropha Oil
|
Trial
Number
|
Mass
of Flask (g)
|
Mass
of Oil (g)
|
Acid
Value (mg of Sodium Hydroxide/g of oil)
|
|
1
|
122.54
|
0.89
|
13.93
|
|
2
|
110.34
|
0.92
|
15.22
|
|
3
|
122.57
|
0.86
|
13,49
|
|
Mean
|
N/A
|
0.89
|
14.38
|
Titration
|
Burette
solution
|
Sodium Hydroxide
|
|
Flask solution
|
Oil in Alcohol
|
|
Indicator
|
Phenolphthalein
|
|
Titration
|
Trial 1
|
Trial 2
|
Trial 3
|
|
Final reading (mL)
|
10.1
|
13.2
|
18.0
|
|
Initial reading (mL)
|
9.1
|
10.1
|
13.2
|
|
Volume
added (mL)
|
3.1
|
3.5
|
2.9
|
|
Mean
titre (mL)
|
3.2
|
Experiment
2
Data
Table 6: Iodine Value of 9.5mL of Jatropha Oil and 0.5mL of TBHQ
|
Trial
Number
|
Mass
of Flask (g)
|
Mass
of Oil (g)
|
Iodine
Value (mg of iodine/g of oil)
|
|
1
|
98.43
|
2.09
|
7.04
|
|
2
|
89.81
|
2.14
|
7.89
|
|
3
|
98.36
|
2.19
|
7.19
|
|
Mean
|
N/A
|
2.14
|
7.35
|
Titration
|
Burette
solution
|
Sodium
thiosulphate
|
|
Flask
solution
|
Oil
+ Potassium Iodide solution
|
|
Indicator
|
Starch
|
|
Titration
|
Trial 1
|
Trial 2
|
Trial 3
|
|
Final reading (mL)
|
30.8
|
22.0
|
34.4
|
|
Initial reading (mL)
|
19.2
|
8.70
|
22.0
|
|
Volume
added (mL)
|
11.6
|
13.3
|
12.4
|
|
Mean
titre (mL)
|
12.4
|
Data
Table 7: Acid Value of 9.5mL of Jatropha Oil and 0.5mL of TBHQ
|
Trial
Number
|
Mass
of Flask (g)
|
Mass
of Oil (g)
|
Acid
Value (mg of Sodium Hydroxide/g of oil)
|
|
1
|
123.30
|
0.84
|
14.10
|
|
2
|
118.63
|
0.89
|
13.03
|
|
3
|
123.65
|
0.82
|
15.17
|
|
Mean
|
N/A
|
0.85
|
14.12
|
Titration
|
Burette
solution
|
Sodium Hydroxide
|
|
Flask solution
|
Oil in Alcohol
|
|
Indicator
|
Phenolphthalein
|
|
Titration
|
Trial 1
|
Trial 2
|
Trial 3
|
|
Final reading (mL)
|
14.5
|
17.4
|
21.0
|
|
Initial reading (mL)
|
12.5
|
14.5
|
17.4
|
|
Volume
added (mL)
|
2.9
|
2.9
|
3.1
|
|
Mean
titre (mL)
|
3.0
|
Data
Table 8: Iodine Value of 9.0mL of Jatropha Oil and 1.0mL of TBHQ
|
Trial
Number
|
Mass
of Flask (g)
|
Mass
of Oil (g)
|
Iodine
Value (mg of iodine/g of oil)
|
|
1
|
95.53
|
2.03
|
6.88
|
|
2
|
98.01
|
2.12
|
6.94
|
|
3
|
89.97
|
2.53
|
6.23
|
|
Mean
|
N/A
|
2.23
|
6.60
|
Titration
|
Burette
solution
|
Sodium
thiosulphate
|
|
Flask
solution
|
Oil
+ Potassium Iodide solution
|
|
Indicator
|
Starch
|
|
Titration
|
Trial 1
|
Trial 2
|
Trial 3
|
|
Final reading (mL)
|
11.2
|
22.8
|
35.2
|
|
Initial reading (mL)
|
0.2
|
11.2
|
22.8
|
|
Volume
added (mL)
|
11.0
|
11.6
|
12.4
|
|
Mean
titre (mL)
|
11.6
|
Data
Table 9: Acid Value of 9.0mL of Jatropha Oil and 1.0mL of TBHQ
|
Trial
Number
|
Mass
of Flask (g)
|
Mass
of Oil (g)
|
Acid
Value (mg of Sodium Hydroxide/g of oil)
|
|
1
|
84.75
|
0.68
|
11.76
|
|
2
|
97.12
|
0.59
|
10.85
|
|
3
|
84.34
|
0.89
|
10.79
|
|
Mean
|
N/A
|
0.72
|
11.11
|
Titration
|
Burette
solution
|
Sodium Hydroxide
|
|
Flask solution
|
Oil in Alcohol
|
|
Indicator
|
Phenolphthalein
|
|
Titration
|
Trial 1
|
Trial 2
|
Trial 3
|
|
Final reading (mL)
|
10.4
|
14.5
|
16.1
|
|
Initial reading (mL)
|
7.5
|
10.5
|
14.5
|
|
Volume
added (mL)
|
2.0
|
1.6
|
2.4
|
|
Mean
titre (mL)
|
2.0
|
|