The general purpose of this lab was to determine the molar mass of an unfamiliar. There are various methods for determining the molar mass of a material such as abnormally cold point depression, boiling stage elevation, osmotic pressure, and vapor pressure lowering. These types of methods tend to be referred to as colligative properties, that may only be used on solutions. Simply by definition, among the properties of the solution is actually a colligative real estate if it depends only within the ratio in the number of allergens of solute and solvent in the solution, not the identity from the solute. The molar mass can be determined by using any of the methods or colligative properties listed previously, but also in this lab the method utilized was cold point depressive disorder. This colligative property is founded on the idea that a remedy freezes at a lower temp than the natural solvent. Put simply when a solute (unknown) can be added to the solvent (lauric acid) that causes the freezing level of the way to lower. This concept can be applied to many real life situations. One of the most common good examples is the utilization of salt upon sidewalks in order to avoid formation of ice. Another important part of this kind of lab was going to understand supercooling, which can also be used to clarify real-life ideas.
Inside the experiment the molar mass of the not known was dependant on using the approach to freezing stage depression. A significant part of this kind of lab was going to obtain the freezing points of the pure lauric acid associated with the solution (lauric acid and unknown). The pure lauric acid and solution equally showed supercooling when obtaining the freezing details. Supercooling is when fluids do not solidify even beneath their usual freezing stage. One example to clarify the concept of supercooling is "freezing rain", whi...
... ved by obtaining measurements better.
The complete purpose of this kind of lab was to determine the molar mass of an not known using the technique of freezing level depression. Another important part of this lab was to understand how digging in a solute to a solvent affects the freezing level of the solvent. Both of these objectives were obtained through the use of the LoggerPro Software. The LoggerPro Program was an essential section of the lab and provided info which even more demonstrated the way the addition with the solute caused the freezing point to lower. The data/results received shows that a small mistake occured through the experiment, although overall the results seem accurate. The molar mass calculated for the unidentified was two hundred and fifty g/mol. The actual mass to get pDibromobenzene is 236 g/mol, which suggests the unknown utilized in the try things out was