DRAFT: This module has unpublished changes.

Table 1: Freezing point depression measurement and calculations

Parameter

Trial 1

Trial 2

Mass of the lauric acid (g)

8.06g

8.06g

Mass of unknown sample (g)

0.51g

0.508g

Freezing point of lauric acid (°C)

42°C

42°C

Freezing point of lauric acid mixed with unknown solute (°C)

40°C

40°C

Change in freezing point (°C)

2°C

2°C

Molar mass (experimental) of unknown solute (g/mol)

1123.4 g/mol

122.9 g/mol

Molality of the solution (mol/kg)

0.513mol/kg

0.513 mol/kg

Moles of the unknown sample (mol)

0.0041mol

0.0041mol

Possible solute

Benzoic Acid

Benzoic Acid

Molar mass of possible solute 
(g/mol)

122.4 g/mol

122.4 g/mol

Percentage of error (%)

0.81%

0.41%

 

 

DRAFT: This module has unpublished changes.