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
fp #1 45.9 44.5 43.8 43.7 43.8 43.7 42.9 43.5 45.5 44.7
molality #2 1.13 1.06 0.66 1.01 1.03 1.02 1.12 1 0.053 0.992
fp #2 33.1 39.7 38.7 39.3 38.6 39.1 38.3 38.7 42.6 39.6
molality #3 1.14 0.544 0.51 1.52 1.52 1.5 0.59 0.49 1.03 0.648
fp #3 35.8 41.7 39.2 37.3 35.9 37.1 39.5 40.9 36.6 41.3
molality #4 1.59 1.53 1.48 0.551 0.52 0.5 1.47 1.46 1.52 1.65
fp #4 36.2 37.6 36.3 41.3 39.8 41.4 36.9 37.4 33.3 37.5
                     
mass (g) lauric acid #1 4.56 4.83 4.30 5.02 4.04 4.43 4.43 4.77 5.00 4.54
fp #1 oC 45.9 44.5 43.8 43.7 43.8 43.7 42.9 43.5 45.5 44.7
mass (g) lauric acid #2 8.51 8.27 7.48 8.04 8.00 8.01 8.05 8.00 8.10 8.50
mass (g) benzoic acid #2 1.12 1.07 0.60 0.99 1.01 1.00 1.10 0.98 0.52 1.03
molality (Dr.R calc) 1.08 1.06 0.66 1.01 1.03 1.02 1.12 1.00 0.53 0.99
fp #2 oC 33.1 39.7 38.7 39.3 38.6 39.1 38.3 38.7 42.6 39.6
mass (g) lauric acid #3 8.04 7.98 7.96 7.98 8.02 8.01 8.05 8.03 8.01 7.83
mass (g) benzoic acid #3 0.52 0.53 0.5 1.48 1.49 1.5 0.58 0.48 1.01 0.62
molality (Dr.R calc) 0.53 0.54 0.51 1.52 1.52 1.53 0.59 0.49 1.03 0.65
fp #3 oC 35.8 41.7 39.2 37.3 35.9 37.1 39.5 40.9 36.6 41.3
mass (g) lauric acid #4 8.00 8.00 8.01 8.02 8.01 8.19 8.06 80.06 8.01 8.15
mass (g) benzoic acid #4 1.55 1.49 1.45 0.50 0.51 0.50 1.45 1.44 1.49 1.64
molality (Dr.R calc) 1.59 1.53 1.48 0.51 0.52 0.50 1.47 0.15 1.52 1.65
fp #4 oC 36.2 37.6 36.3 41.3 39.8 41.4 36.9 37.4 33.3 37.5
                     
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 11
fp #1 41.79 45.05 46.53 46.12 47.41 47.6 43.09 44.55 45.59 43.4 45.1 43.9
molality #2 0.994 1.02 1.09 1.01 0.82 1.02 1.02 1.02 1.18 0.77
fp #2 39.22 42.73 42.68 41.53 41.32 39.51 40.70 39.52 40.35 38.40 42.00 38.30
molality #3 0.499 0.512 0.6 0.521 0.513 0.512 0.516 0.512 0.573 0.507
fp #3 45.00 38.00 44.55 41.64 44.60 41.31 44.23 42.74 40.60 41.80 40.50
molality #4 1.49 1.54 1.62 1.38 1.5 1.54 1.54 1.54 1.47 1.4
fp #4 37.60 37.22 41.94 37.00 37.23 36.79 37.88 36.50 37.40 38.40 35.40
                         
mass (g) lauric acid #1 4.76 5.00 5.00 4.16 4.16 5.04 5.99 5.01 4.54 4.73 4.55 5.35
fp #1 oC 41.79 45.05 46.53 46.12 47.41 47.6 43.09 44.55 45.59 43.4 45.1 43.9
mass (g) lauric acid #2 8.05 8.06 8.00 8.07 7.98 8.00 8.00 8.00 8.00 8.34 8.08 8.27
mass (g) benzoic acid #2 0.98 1.10 1.00 1.08 0.98 1.00 1.00 1.00 1.00 1.20 0.76 1.28
molality (Dr.R calc) 1.00 1.12 1.02 1.10 1.01 1.02 1.02 1.02 1.02 1.18 0.77 1.27
fp #2 oC 39.22 42.73 42.68 41.53 41.32 39.51 40.70 39.52 40.35 38.40 42.00 38.30
mass (g) lauric acid #3 8.01 8.00 8.00 8.07 8.02 8.00 8.00 8.01 8.00 7.86 8.56 8.49
mass (g) benzoic acid #3 0.52 0.49 0.30 0.59 0.51 0.50 0.50 0.51 0.50 0.55 0.53 0.59
molality (Dr.R calc) 0.53 0.50 0.31 0.60 0.52 0.51 0.51 0.52 0.51 0.57 0.51 0.57
fp #3 oC 45.00 38.00 44.55 41.64 44.60 41.31 44.23 42.74 40.60 41.80 40.50
mass (g) lauric acid #4 8.01 7.98 8.00 8.00 8.98 8.00 8.00 8.00 8.00 8.02 7.98 8.22
mass (g) benzoic acid #4 1.48 1.74 1.50 1.58 1.51 1.54 1.50 1.50 1.50 1.44 1.37 1.55
molality (Dr.R calc) 1.51 1.79 1.54 1.62 1.38 1.58 1.54 1.54 1.54 1.47 1.41 1.54
fp #4 oC 37.60 37.22 41.94 37.00 37.23 36.79 37.88 36.50 37.40 38.40 35.40