| DOWNLOAD: | http://chemconnections.org/general/chem120/fp results-2012.xls | ||||||||||
| fp Depression | |||||||||||
| MM (g/mol) | |||||||||||
| Lauric Acid | C12H24O2 | 200.32 | solvent | ||||||||
| w/ Benzoic acid | C7H8O2 | 122.12 | solute | ||||||||
| Lab Data | AM | ||||||||||
| Group # | |||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||
| mass (g) lauric acid #1 | 4.86 | 5.37 | 4.72 | 4.67 | 5.07 | 5.15 | 4.91 | ||||
| fp #1 oC | 42.5 | 41.3 | 42.7 | 44.6 | 44.3 | 45.0 | 47.5 | ||||
| mass (g) lauric acid #2 | 8.11 | 8.34 | 8.01 | 8.33 | 8.40 | 8.12 | 7.99 | ||||
| mass (g) benzoic acid #2 | 1.10 | 1.17 | 1.02 | 1.15 | 1.03 | 1.17 | 1.00 | ||||
| fp #2 oC | 36.7 | 35.0 | 39.6 | 34.4 | 39.7 | 39.6 | 39.9 | ||||
| mass (g) lauric acid #3 | 8.05 | 8.03 | 7.96 | 8.08 | 8.24 | 8.02 | 8.00 | ||||
| mass (g) benzoic acid #3 | 0.53 | 0.59 | 0.52 | 0.56 | 0.52 | 0.53 | 0.51 | ||||
| fp #3 oC | 39.7 | 40.3 | 39.6 | 39.2 | 41.8 | 43.4 | 44.7 | ||||
| mass (g) lauric acid #4 | 8.02 | 8.01 | 8.15 | 8.12 | 8.05 | 8.59 | 8.00 | ||||
| mass (g) benzoic acid #4 | 1.53 | 1.52 | 1.54 | 1.54 | 1.46 | 1.48 | 1.50 | ||||
| fp #4 oC | 37.3 | 36.6 | 35.2 | 40.4 | 37.8 | 38.3 | 37.8 | ||||
| fp Depression | |||||||||||
| MM (g/mol) | |||||||||||
| Lauric Acid | C12H24O2 | 200.32 | solvent | ||||||||
| w/ Benzoic acid | C7H8O2 | 122.12 | solute | ||||||||
| Lab Data | PM | ||||||||||
| Group # | |||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||
| mass (g) lauric acid #1 | 4.25 | 5.63 | 5.41 | 5.63 | 5.07 | 4.44 | 4.91 | ||||
| fp #1 oC | 41.0 | 46.7 | 44.7 | 45.2 | 44.3 | 47.7 | 47.5 | ||||
| mass (g) lauric acid #2 | 7.99 | 8.00 | 8.00 | 8.01 | 8.40 | 8.00 | 7.99 | ||||
| mass (g) benzoic acid #2 | 0.98 | 1.00 | 1.08 | 0.51 | 1.03 | 1.00 | 1.00 | ||||
| fp #2 oC | 41.8 | 40.7 | 40.5 | 42.5 | 39.7 | 39.9 | 39.9 | ||||
| mass (g) lauric acid #3 | 8.03 | 7.99 | 8.00 | 8.01 | 8.24 | 8.00 | 8.00 | ||||
| mass (g) benzoic acid #3 | 0.41 | 0.50 | 0.60 | 1.05 | 0.52 | 0.50 | 0.51 | ||||
| fp #3 oC | 43.8 | 43.5 | 41.9 | 40.6 | 41.8 | 41.4 | 44.7 | ||||
| mass (g) lauric acid #4 | 8.03 | 7.99 | 8.02 | 8.01 | 8.05 | 8.00 | 8.00 | ||||
| mass (g) benzoic acid #4 | 1.44 | 1.49 | 1.53 | 1.54 | 1.46 | 1.50 | 1.50 | ||||
| fp #4 oC | 37.9 | 37.4 | 37.4 | 37.4 | 37.8 | 38.0 | 37.8 | ||||