The purpose of the Colligative Properties Lab was to find colligative properties
and gain a better understanding of them. This was to be done by dissolving an unknown
substance in a solvent and determining the molar mass of the unknown by using a
known freezing point constant and the change in freezing point.
The results from the Colligative Properties Lab showed a change in
freezing/melting point. In this case the freezing point was lowered. . The
melting/freezing point for t-butanol by itself was approximately 22 degrees C. The
melting/freezing point for t-butanol with the Unknown D was approximately 1 degrees C.
By using the change in freezing/melting points it was determined that the molar mass of
Unknown D was approximately 52.23 g/mol. After referring to Figure 0.2 in the lab
notebook it was decided that Unknown D was 1-Propanol because the molar mass
calculated was closest to the molar mass of 1-Propanol.
These results show that the amount of solute versus solvent in a solution does in
fact have an effect on the colligative properties of that solution. Similarly, that based on
the ratios of solute to solvent molecules the